CN102356682A - Wireless communication terminal device, wireless communication base station device, and resource region setting method - Google Patents

Wireless communication terminal device, wireless communication base station device, and resource region setting method Download PDF

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Publication number
CN102356682A
CN102356682A CN2010800121491A CN201080012149A CN102356682A CN 102356682 A CN102356682 A CN 102356682A CN 2010800121491 A CN2010800121491 A CN 2010800121491A CN 201080012149 A CN201080012149 A CN 201080012149A CN 102356682 A CN102356682 A CN 102356682A
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frequency band
unit frequency
descending
unit
terminal
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CN2010800121491A
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CN102356682B (en
Inventor
西尾昭彦
中尾正悟
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Sun Patent Trust Inc
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Matsushita Electric Industrial Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2649—Demodulators
    • H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2649—Demodulators
    • H04L27/26524—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Quality & Reliability (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A terminal capable of reducing the resource regions in an uplink component band without increasing signaling even if a plurality of acknowledgment signals to downlink data transmitted respectively in a plurality of downlink component bands are transmitted from one uplink component band. A terminal (200) for making communication using the plurality of downlink component bands, wherein a PCFICH reception section (208) obtains CFI information indicating the number of symbols used for a control channel to which resource allocation information relating to downlink data addressed to a device is allocated for each of the downlink component bands, a mapping section (214); sets a resource region to which an acknowledgment signal to the downlink data is allocated for each of the plurality of downlink component bands according to the CFI information of each of the downlink component bands in an uplink component band set to the device, and maps the acknowledgment signals into the resource regions corresponding to the downlink component bands used for the allocation of the downlink data.

Description

Radio communication terminal device, radio communication base station device and resource area establishing method
Technical field
The present invention relates to radio communication terminal device, radio communication base station device and resource area establishing method.
Background technology
At 3GPP-LTE(3rdGenerationPartnershipProjectRadioAccessNetwo rkLongTermEvolution: third generation partner program wireless access network Long Term Evolution; Below; Be called LTE) in; Adopt OFDMA(OrthogonalFrequencyDivisionMultipleAccess: OFDM) as the communication mode of downgoing line; Adopt SC-FDMA(SingleCarrierFrequencyDivisionMultipleAccess: single-carrier frequency division multiple access) as the communication mode (for example, with reference to non-patent literature 1,2 and 3) of uplink.
In LTE; Radio communication base station device (below; Economize slightly " base station ") through the Resource Block in the band system band (Resource Block:RB) is distributed to radio communication terminal device (below, province is " terminal " slightly) with the time per unit that is called as subframe, thus communicate.In addition, the base station will be used to notify the control information of the resource allocation result of downlink data and uplink data to send to the terminal.For example use PDCCH downgoing line control channels such as (Physical Downlink Control Channel, physical downlink control channels) to send to the terminal this control information.Here, each PDCCH takies the resource that is made up of 1 or continuous a plurality of CCE (Control Channel Element, control channel unit).In addition, in LTE, the frequency band of bandwidth of supporting to have maximum 20MHz is as system bandwidth.
In addition, PDCCH is sent out in the 3OFDM code element of each subframe beginning.In addition; The OFDM code element number that uses in the transmission of PDCCH can be controlled with subframe unit, and (Physical Control Format Indicator Channel: Physical Control Format Indicator Channel) (Control Format Indicator: the control format indication) information is controlled Tong Zhi CFI according to using the PCFICH that sends with the OFDM code element of each subframe beginning.
In addition, the base station is to a plurality of terminals of a sub-frame allocation, so send a plurality of PDCCH simultaneously.At this moment, the base station is for the terminal of the transmission destination of discerning each PDCCH, and the CRC bit that will carry out shielding (masking) (or scrambling) gained with the Termination ID that sends the destination is included among the PDCCH and sends.Then, in might mailing to a plurality of PDCCH at this terminal, the Termination ID that the terminal utilizes this terminal is to CRC bit (demasking) (or the descrambling) that demask, thereby PDCCH is carried out blind decoding and detects the PDCCH that mails to this terminal.
In addition, be purpose with the number of times of cutting down the blind decoding in the terminal, the object of studying each terminal qualification blind decoding is the method for CCE.In this method, each terminal is limited CCE zone as the blind decoding object (below, be called search volume (Search Space)).Thus, each terminal is only carried out blind decoding for the CCE in the search volume of having distributed to this terminal and is got final product, and therefore can cut down the number of times of blind decoding.Here, use the search volume at the Termination ID at each terminal and each terminal of Hash (hash) function setting that randomized function is carried out in conduct.
In addition, for the downlink data that mails to the terminal from the base station, the terminal will represent that the response signal (below be called ack/nack signal) of the error detection result of downlink data feeds back to the base station.With this ack/nack signal, for example use PUCCH uplink control channels such as (Physical Uplink Control Channel, Physical Uplink Control Channel) to send to the base station.Here; In order to save that the PUCCH that is used for that the transmission of ack/nack signal is used notifies from the base station to the signaling at each terminal and the communication resource that uses downgoing line expeditiously, with distributed CCE number of downlink data related with the resource number that is used to send to the PUCCH of the ack/nack signal of this downlink data.Each terminal can be according to this association, from being mail to the CCE of the control information at this terminal by mapping, the PUCCH that uses in the transmission of judgement from the ack/nack signal at this terminal.In addition, ack/nack signal is 1 bit signal of expression ACK (zero defect) or NACK (mistake is arranged), carries out BPSK (Binary Phase Shift Keying: two-phase PSK) be sent out after the modulation.In addition, the base station can freely be set in the resource area of the PUCCH that uses in the transmission of ack/nack signal, and notifies all terminals to the sub-district that is positioned at this base station with the beginning resource number of the resource area of PUCCH through broadcast message.
In addition, the PUCCH transmission power control bit that comprises in through PDCCH of the transmitted power in PUCCH sends, used of terminal is controlled.
In addition, begun to realize the standardization of the senior 3GPPLTE (3GPP LTE-Advanced) (below, be called LTE-A) than the high speed of LTE communication further.In LTE-A,, estimate to import the base station that can communicate and terminal (below, be called the LTE-A terminal) with the wideband frequency more than the 40MHz in order to realize downlink transfer speed and the uplink speed more than the maximum 500Mbps more than the maximum 1Gbps.In addition, the LTE-A system not only is asked to take in the LTE-A terminal, also is asked to take in the terminal corresponding with the LTE system (below be called the LTE terminal).
In LTE-A,, proposed to link frequency band polymerization (Band aggregation) mode (for example, with reference to non-patent literature 1) that a plurality of frequency bands communicate in order to realize the broadband connections more than the 40MHz.For example, the frequency band of bandwidth that will have 20MHz is as the base unit of communication band (below, be called unit frequency band (component band)).Therefore, in LTE-A, for example, realize the system bandwidth of 40MHz through linking two unit frequency bands.
In addition, in LTE-A, can consider that the base station uses the descending unit frequency band of each unit frequency band the terminal to be notified the resource allocation information (for example, non-patent literature 4) of each unit frequency band.For example, carry out the terminal (using the terminal of two unit frequency bands) of the wideband transmit of 40MHz, be configured to the PDCCH of the descending unit frequency band of each unit frequency band through reception, thereby obtain the resource allocation information of two unit frequency bands.
In addition, in LTE-A, the volume of transmitted data of also envisioning in each circuit of uplink and downgoing line is separate.For example, have and in downgoing line, carry out wideband transmit (communication band of 40MHz), in uplink, carry out the situation of narrow band transmission (communication band of 20MHz).In this case,, use two descending unit frequency bands in the downgoing line, only use a up unit frequency band in the uplink the terminal.That is, use asymmetrical unit frequency band (for example, with reference to non-patent literature 5) in uplink and the downgoing line.At this moment, to the ack/nack signal of the downlink data that sent respectively with two descending unit frequency bands, all use be configured among the PUCCH of a up unit frequency band the ACK/NACK resource and send it to the base station.
In addition; Even also under the situation of research unit frequency band of use equal number in uplink and downgoing line; Same with the situation of the asymmetrical unit of above-mentioned use frequency band, send a plurality of ack/nack signals from up unit frequency band to the downlink data that has sent respectively with a plurality of descending units frequency band.Here, to each terminal set independently from a plurality of up units frequency band, which up unit frequency band sends ack/nack signal.
The prior art document
Non-patent literature
Non-patent literature 1:3GPP TS 36.211 V8.3.0, " Physical Channels and Modulation (Release 8), " May 2008
Non-patent literature 2:3GPP TS 36.212 V8.3.0, " Multiplexing and channel coding (Release 8), " May 2008
Non-patent literature 3:3GPP TS 36.213 V8.3.0, " Physical layer procedures (Release8), " May 2008
Non-patent literature 4:3GPP TSG RAN WG1 meeting, R1-082468, " Carrier aggregation LTE-Advanced, " July 2008
Non-patent literature 5:3GPP TSG RAN WG1 meeting, R1-090813, " PUCCH design for carrier aggregation, " February 2009
Summary of the invention
The problem that invention will solve
Under the situation of sending from a up unit frequency band, the ack/nack signal to the downlink data that sent respectively with each descending unit frequency band is not clashed each other to a plurality of ack/nack signals of the downlink data that sent respectively with a plurality of descending units frequency band.That is to say, in each up unit frequency band, need set the resource area (below be called the PUCCH zone) of the PUCCH that is used to send ack/nack signal respectively each unit frequency band of all descending unit frequency bands.
Here, need guarantee sufficient resource area to each up unit band setting, corresponding PUCCH zone so that hold ack/nack signal to the downlink data that has sent from each descending unit frequency band with each descending unit frequency band.This is because the ACK/NACK resource is related by 1 pair 1 ground with CCE.Therefore; Increase along with descending unit frequency band number; The PUCCH zone (ACK/NACK number of resources) that need guarantee in each up unit frequency band increases, and the ascending resource of the uplink data of distributing terminals (for example, PUSCH (Physical Uplink Shared Channel)) lacks.Thus, the data throughout of uplink descends.
In addition, the base station is notified the PUCCH zone corresponding with each descending unit frequency band respectively with broadcast message.Here, in a plurality of up units frequency band, need to set above-mentioned PUCCH zone, thus the base station with the broadcast message of the descending unit frequency band of each up unit frequency band related (in pairs), notify the PUCCH of each descending unit frequency band regional.That is to say,, need the corresponding relevant information (broadcast message) in PUCCH zone of notice and all descending unit frequency bands for each up unit frequency band.Therefore, the data throughout of downgoing line descends because of the expense increase of the broadcast message of downgoing line.
The objective of the invention is to; Send under the situation to a plurality of ack/nack signals of the downlink data that sent respectively with a plurality of descending units frequency band even provide from a up unit frequency band; Also signaling be can not increase, and terminal, base station and the resource area establishing method in the PUCCH zone (ACK/NACK number of resources) in the up unit frequency band reduced.
The scheme of dealing with problems
The radio communication terminal device that terminal of the present invention is to use a plurality of descending units frequency band to communicate; Its structure that adopts comprises: receiving element; Each unit frequency band to said a plurality of descending units frequency band obtains CFI information, the code element number that this CFI information representation is used in the control channel of the resource allocation information that is assigned with the downlink data that mails to this device; Setup unit; In the up unit frequency band that this device is set; Based on the said CFI information of each unit frequency band of said a plurality of descending units frequency band,, set and be assigned with resource area the response signal of said downlink data to each unit frequency band of said a plurality of descending units frequency band; And map unit, said response signal is mapped to the corresponding said resource area of using in the distribution with said downlink data of descending unit frequency band.
The structure that adopt base station of the present invention comprises: generation unit; For the radio communication terminal device that uses a plurality of descending units frequency band to communicate; Each unit frequency band to said a plurality of descending units frequency band generates CFI information, the code element number that this CFI information representation is used in the control channel of the resource allocation information that is assigned with the downlink data that mails to said radio communication terminal device; And receiving element; In the up unit frequency band that said radio communication terminal device is set; Said CFI information based on each unit frequency band of said a plurality of descending units frequency band; Confirm to be assigned with resource area to the response signal of said downlink data, and from the distribution of said downlink data extract said response signal in the corresponding said resource area of the descending unit frequency band that uses.
Resource area establishing method of the present invention; At the radio communication terminal device that uses a plurality of descending units frequency band to communicate; Each unit frequency band to said a plurality of descending units frequency band obtains CFI information, the code element number that this CFI information representation is used in the control channel of the resource allocation information that is assigned with the downlink data that mails to said radio communication terminal device; And in the up unit frequency band that said radio communication terminal device is set; Said CFI information based on each unit frequency band of said a plurality of descending units frequency band; To each unit frequency band of said a plurality of descending units frequency band, set and be assigned with resource area the response signal of said downlink data.
The effect of invention
According to the present invention; Even send under the situation to a plurality of ack/nack signals of the downlink data that sent respectively with a plurality of descending units frequency band from a up unit frequency band; Also can not increase signaling, and reduce the PUCCH zone (ACK/NACK number of resources) in the up unit frequency band.
Description of drawings
Fig. 1 is the block diagram of structure of the base station of expression execution mode 1 of the present invention.
Fig. 2 is the block diagram of structure at the terminal of expression embodiment of the present invention 1.
Fig. 3 is the figure of resource of the PUCCH related with each CCE of expression execution mode 1 of the present invention.
Fig. 4 is the figure of the regional setting of the PUCCH of expression execution mode 1 of the present invention.
Fig. 5 is the figure (establishing method 1) of the regional setting of the PUCCH of expression execution mode 2 of the present invention.
Fig. 6 is the figure (establishing method 1) of the regional setting of the PUCCH of expression execution mode 2 of the present invention.
Fig. 7 is the figure (establishing method 2) of the regional setting of the PUCCH of expression execution mode 2 of the present invention.
Fig. 8 is the figure (under the asymmetrical situation) of the regional setting of the PUCCH of expression execution mode 2 of the present invention.
Fig. 9 is the figure of the regional setting of the PUCCH of expression execution mode 3 of the present invention.
Figure 10 is the figure of the regional setting of the PUCCH of expression execution mode 4 of the present invention.
Label declaration
100 base stations
200 terminals
101 setup units
102 control units
The 103PDCCH generation unit
104,107,109,110,211,212 modulating units
105 allocation units
The 106PCFICH generation unit
108 broadcast message generation units
111 Multiplexing Units
112,215IFFT unit
113,216CP extra cell
114,217 radio frequency transmitting elements
115,201 antennas
116,202 rf receiver units
117,203CP removes the unit
118,204FFT unit
119 extraction units
The 120IDFT unit
121 Data Receiving unit
The 122ACK/NACK receiving element
205 separative elements
206 broadcast message receiving elements
207 set information receiving elements
The 208PCFICH receiving element
The 209PDCCH receiving element
The 210PDSCH receiving element
213DFT unit `
214 map unit
Embodiment
Below, the execution mode that present invention will be described in detail with reference to the accompanying.In addition, in execution mode, to identical structural element additional phase label together, its explanation is omitted because of repetition.
In addition, in following explanation, suppose the system that downgoing line and uplink are made up of two unit frequency bands respectively.In addition, the base station uses the PDCCH that is configured in two descending unit frequency bands to carry out the distribution of downlink data, and sends downlink data to the terminal.In addition, the terminal will use the PUCCH that is configured in a up unit frequency band to feed back to the base station to the ack/nack signal that uses the downlink data that two descending unit frequency bands send.
(execution mode 1)
Fig. 1 is the block diagram of structure of the base station 100 of this execution mode of expression.
In base station shown in Figure 1 100, setup unit 101 is set one or more units frequency band that (configure) uses respectively for example according to required transmission rate or volume of transmitted data to each terminal in uplink and downgoing line.For example, setup unit 101 is set in the up unit frequency band of use in the data transmission and the up unit frequency band of descending unit frequency band and use in PUCCH sends.In addition, setup unit 101 will comprise the set information of the unit frequency band that each terminal has been set, and output to control unit 102, PDCCH generation unit 103 and modulating unit 107.
The ascending resource that control unit 102 generates the uplink data that are used to represent distributing terminals (for example; PUSCH) downlink resource that ascending resource assignment information and expression distribute the downlink data mail to the terminal (for example; PDSCH (Physical Downlink Shared Channel, physical down link sharing channel)) downlink resource assignment information.Then, control unit 102 outputs to PDCCH generation unit 103 and extraction unit 119 with the ascending resource assignment information, and the downlink resource assignment information is outputed to PDCCH generation unit 103 and Multiplexing Unit 111.Here, control unit 102 is based on the set information from setup unit 101 input, ascending resource assignment information and downlink resource assignment information distributed to the PDCCH that is configured to the descending unit frequency band that each terminal has been set.Particularly, control unit 102 is distributed to the downlink resource assignment information PDCCH of the descending unit frequency band that is configured in the represented resource allocation object of this downlink resource assignment information.In addition, control unit 102 is distributed to the ascending resource assignment information PDCCH that is configured in the descending unit frequency band related with the up unit frequency band of the represented resource allocation object of this uplink assignment information.In addition, PDCCH is made up of one or more CCE.In addition; Propagation path quality (CQI:Channel Quality Indicator based on the terminal of distributing; CQI) and control information size, the CCE number that base station 100 is used be set at the terminal can be with the error rate receiving control information of abundant necessity.In addition; Control unit 102 is based on (for example being assigned with control information in each descending unit frequency band; Assignment information) the employed CCE number of PDCCH; The OFDM code element number that uses in the transmission to each frequency band decision PDCCH of descending unit, and generate the CFI information that is used to represent determined OFDM code element number.That is to say; Control unit 102 is for the terminal of using a plurality of descending units frequency band to communicate; Each unit frequency band to a plurality of descending units frequency band generates CFI information, the code element number that this CFI information representation is used in the PDCCH of the resource allocation information that has been assigned with the downlink data that mails to the terminal (ascending resource assignment information or downlink resource assignment information).In addition, control unit 102 outputs to PCFICH generation unit 106, Multiplexing Unit 111 and ACK/NACK receiving element 122 with the CFI information of each descending unit frequency band.
PDCCH generation unit 103 generates and comprises from the ascending resource assignment information of control unit 102 inputs and the PDCCH signal of downlink resource assignment information.In addition, 103 pairs of PDCCH generation units have been assigned with the additional CRC bit of PDCCH signal of ascending resource assignment information and downlink resource assignment information, and then the CRC bit is shielded (or scrambling) with Termination ID.Then, the PDCCH signal after PDCCH generation unit 103 will shield outputs to modulating unit 104.
104 pairs of PDCCH signals from 103 inputs of PDCCH generation unit of modulating unit carry out modulating after the chnnel coding, and the PDCCH signal after will modulating outputs to allocation units 105.
Allocation units 105 will be from the PDCCH signal at each terminal of modulating unit 104 input, distributes to the CCE in the search volume at each terminal in the descending unit frequency band of constituent parts frequency band respectively.For example; Allocation units 105 are according to the Termination ID that uses each terminal and CCE number of carrying out that randomized hash function calculates and the CCE number (L) that constitutes the search volume, calculate the search volume of each unit frequency band of a plurality of descending unit frequency band that each terminal has been set.That is to say; The starting position (CCE number) that allocation units 105 will use will be that Termination ID and the hash function at certain terminal calculate, CCE number is set at the search volume at this terminal, and will be from the starting position to the continuous search volume that is equivalent to be set at till the CCE that CCE counts L this terminal.Here, allocation units 105 are set same search volume (search volume that is made up of same CCE number CCE) between a plurality of descending unit frequency band that each terminal set.Then, the allocation units 105 PDCCH signal that will distribute to CCE outputs to Multiplexing Unit 111.In addition, allocation units 105 will distribute CCE number of CCE of PDCCH signal to output to ACK/NACK receiving element 122.
PCFICH generation unit 106 generates the PCFICH signal based on the CFI information of each descending unit frequency band of importing from control unit 102.For example, PCFICH generation unit 106 is encoded the CFI information (CFI bit) of 2 bits of each descending unit frequency band and is generated the information of 32 bits, and carries out the QPSK modulation through the information of 32 bits that will generate and generate the PCFICH signal.Then, PCFICH generation unit 106 outputs to Multiplexing Unit 111 with the PCFICH signal that is generated.
Modulating unit 107 will be modulated from the set information of setup unit 101 inputs, and the set information after will modulating outputs to Multiplexing Unit 111.
Broadcast message generation unit 108 is set the operation parameter (system information (SIB:System Information Block (system information block))) of the sub-district of these base stations, and generates the broadcast message that comprises the system information of having set (SIB).Here, base station 100 uses the descending unit frequency band related with each up unit frequency band to broadcast the system information of each up unit frequency band.The PUCCH area information etc. that the starting position (resource number) in the PUCCH zone of in the transmission of expression ack/nack signal, using is arranged as the system information of up unit frequency band in addition.Then, the broadcast message that broadcast message generation unit 108 will comprise the system information of subdistricts (SIB) of this base station outputs to modulating unit 109, and the system information of subdistricts of said this base station (SIB) comprises PUCCH area information etc.
Modulating unit 109 will be modulated from the broadcast message of broadcast message generation unit 108 inputs, and the broadcast message after will modulating outputs to Multiplexing Unit 111.
The transmission data (downlink data) that modulating unit 110 will be imported carry out modulating after the chnnel coding, and the transmission data-signal after will modulating outputs to Multiplexing Unit 111.
Multiplexing Unit 111 will be from the PDCCH signal of allocation units 105 input, from the PCFICH signal of PCFICH generation unit 106 inputs, from the set information of modulating unit 107 inputs, from the broadcast message of modulating unit 109 inputs and carry out multiplexing from the data-signal (being the PDSCH signal) of modulating unit 110 inputs.Here, Multiplexing Unit 111 is based on the CFI information from control unit 102 inputs, to the OFDM code element number of each descending unit frequency band decision to the PDCCH configuration.In addition, Multiplexing Unit 111 is mapped to each descending unit frequency band based on the downlink resource assignment information from control unit 102 inputs with PDCCH signal and data-signal (PDSCH signal).In addition, Multiplexing Unit 111 also can be mapped to PDSCH with set information.Then, Multiplexing Unit 111 outputs to IFFT (Inverse Fast Fourier Transform, invert fast fourier transformation) unit 112 with multiplexed signals.
IFFT unit 112 will be transformed to time waveform from the multiplexed signals of Multiplexing Unit 111 inputs, and CP (Cyclic Prefix, Cyclic Prefix) extra cell 113 appends to CP in this time waveform, obtains ofdm signal thus.
Radio frequency transmitting element 114 carries out wireless transmission for the ofdm signal from 113 inputs of CP extra cell and handles (up-conversion, D/A conversion etc.), and it is sent via antenna 115.
On the other hand, rf receiver unit 116 carries out wireless receiving for the wireless receiving signal that receives with frequency acceptance band via antenna 115 and handles (down-conversion, A/D conversion etc.), and the reception signal that will obtain outputs to CP removal unit 117.
CP removes unit 117 and from receive signal, removes CP, and the reception signal transformation that FFT (Fast Fourier Transform, fast fourier transform) will remove behind the CP unit 118 is frequency-region signal.
Extraction unit 119 based on the ascending resource assignment information of importing from control unit 102 (for example; Ascending resource assignment information before 4 subframes); From the frequency-region signal of FFT unit 118 inputs, extract the uplink data and the PUCCH signal (for example, ack/nack signal) at each terminal.(Inverse Discrete Fourier transform: inverse discrete Fourier transformer inverse-discrete) unit 120 signal transformation that will be extracted by extraction unit 119 is time-domain signal to IDFT, and this time-domain signal is outputed to Data Receiving unit 121 and ACK/NACK receiving element 122.
Data Receiving unit 121 will be from the time-domain signal of IDFT unit 120 input, the uplink data decode.Then, Data Receiving unit 121 is exported decoded uplink data as receiving data.
ACK/NACK receiving element 122 extract from the time-domain signal of IDFT unit 120 inputs, to the ack/nack signal from each terminal of downlink data (PDSCH signal).Particularly; ACK/NACK receiving element 122 in the up unit frequency band that each terminal is set, from the corresponding PUCCH zone of the descending unit frequency band that has been configured employed PDCCH signal the distribution of downlink data in, with this PDCCH signal in extraction ack/nack signal among the related PUCCH (ACK/NACK resource) of employed CCE.Here, according to the CCE number that goes out from control unit 102 CFI information calculations input, each descending unit frequency band, can use by each descending unit frequency band and descending unit reel number frequently, confirm the PUCCH zone.Here; The PDCCH signal allocation of downlink resource assignment information that will comprise the downlink data (PDSCH signal) of a plurality of units frequency band in base station 100 for certain terminal has been given under the situation of CCE of a plurality of descending units frequency band; ACK/NACK receiving element 122 in the PUCCH zone of descending unit frequency band to each, from the CCE number related PUCCH (ACK/NACK resource) of the CCE that the distribution of downlink data, has used in extract ack/nack signal.Particularly; ACK/NACK receiving element 122 is being set in the up unit frequency band at terminal; Based on according to being set, confirm to be assigned with PUCCH zone to the ack/nack signal of downlink data to the CFI information calculations spendable CCE number of each unit frequency band that go out, a plurality of descending units frequency band of each unit frequency band of a plurality of descending unit frequency band at terminal.Then, ACK/NACK receiving element 122 from the distribution of downlink data extract ack/nack signal in the corresponding PUCCH zone of the descending unit frequency band that used.Thus, 122 acquisitions of ACK/NACK receiving element are to each ack/nack signal of the downlink data of a plurality of units frequency band.Then, the ACK/NACK of the ack/nack signal that extracts of ACK/NACK receiving element 122 judges.
Fig. 2 is the block diagram of structure at the terminal 200 of this execution mode of expression.Terminal 200 uses a plurality of descending units frequency band to receive data-signal (downlink data), and uses the PUCCH of a up unit frequency band will send to base station 100 to the ack/nack signal of this data-signal.
In terminal shown in Figure 2 200, the structure that rf receiver unit 202 adopts variable frequency acceptance band, and based on the band information from 207 inputs of set information receiving element, the change frequency acceptance band.Then, rf receiver unit 202 carries out wireless receiving for the wireless receiving signal that receives with frequency acceptance band via antenna 201 (being ofdm signal) here and handles (down-conversion, A/D conversion etc.), and the reception signal that will obtain outputs to CP removal unit 203.
CP removes unit 203 and from receive signal, removes CP, and the reception signal transformation after CP is removed in FFT unit 204 is frequency-region signal.This frequency-region signal is outputed to separative element 205.
Separative element 205 will be from the FFT unit Signal Separation of 204 inputs be the broadcast message that comprises each system information of subdistricts, the control signal of the high level that comprises set information (for example; RRC signaling etc.), PCFICH signal, PDCCH signal and data-signal (PDSCH signal), said each system information of subdistricts comprises the PUCCH area information that is used to represent the PUCCH zone.Then; Separative element 205 outputs to broadcast message receiving element 206 with broadcast message; Control signal is outputed to set information receiving element 207; The PCFICH signal is outputed to PCFICH receiving element 208; The PDCCH signal is outputed to PDCCH receiving element 209, the PDSCH signal is outputed to PDSCH receiving element 210.
Broadcast message receiving element 206 is in read system information (SIB) from the broadcast message of separative element 205 inputs.In addition, the PUCCH area information that comprises in the system information of the descending unit frequency band that broadcast message receiving element 206 will be related with the up unit frequency band that uses during PUCCH sends outputs to map unit 214.Here, comprise the starting position (resource number) in the PUCCH zone of this up unit frequency band in the PUCCH area information, for example, through SIB2 (system information block type 2: system information block type 2) be broadcasted.
Set information receiving element 207 is from the control signal of separative element 205 input, read be set to this terminal, be used for the information that up unit frequency band that data send and descending unit frequency band and expression are used for the up unit frequency band that PUCCH sends.Then, set information receiving element 207 outputs to PDCCH receiving element 209, rf receiver unit 202 and radio frequency transmitting element 217 as band information with the information that reads.In addition, set information receiving element 207 is from the control signal of separative element 205 input, reads the information that is used to represent Termination ID that this terminal is set, and the information that reads is outputed to PDCCH receiving element 209 as Termination ID information.
PCFICH receiving element 208 is extracting CFI information from the PCFICH signal of separative element 205 inputs.That is to say; Each unit frequency band of a plurality of descending unit frequency band that PCFICH receiving element 208 sets this terminal obtains CFI information, and said CFI information representation has been assigned with the OFDM code element number that uses among the PDCCH of resource allocation information of the downlink data that mails to this terminal.Then, PCFICH receiving element 208 outputs to PDCCH receiving element 209 and map unit 214 with the CFI information that extracts.
PDCCH receiving element 209 will carry out blind decoding from the PDCCH signal of separative element 205 inputs, obtain to mail to the PDCCH signal (resource allocation information) at this terminal.Here, the PDCCH signal is assigned to respectively and is disposed at from the CCE of the band information of set information receiving element 207 input descending unit frequency band represented, that this terminal is set (that is, PDCCH).Particularly, at first, PDCCH receiving element 209 has been confirmed to be configured the OFDM code element number of PDCCH based on the CFI information from 208 inputs of PCFICH receiving element to each descending unit frequency band.Then, PDCCH receiving element 209 uses from the Termination ID at this represented terminal of the Termination ID information of set information receiving element 207 inputs, calculates the search volume at this terminal.Here, the search volume that calculates (constituting CCE number of CCE of search volume) is all identical between a plurality of descending unit frequency band that this terminal is set.Then, PDCCH receiving element 209 will carry out demodulation and decoding to the PDCCH signal that each CCE distributed in the search volume of being calculated.Then, PDCCH receiving element 209 utilizes the Termination ID at this terminal of Termination ID information representation for decoded PDCCH signal, and the CRC bit is demasked, and the PDCCH signal determining with CRC=OK (zero defect) is the PDCCH signal that mails to this terminal thus.PDCCH receiving element 209 carries out above-mentioned blind decoding through each the unit frequency band to transmission PDCCH signal, thereby obtains the resource allocation information of this unit frequency band.Then, PDCCH receiving element 209 will mail to the downlink resource assignment information that comprises in the PDCCH signal at this terminal and output to PDSCH receiving element 210, and the ascending resource assignment information is outputed to map unit 214.In addition, PDCCH receiving element 209 will output to map unit 212 in CCE number of CCE (CCE of CRC=OK) that the constituent parts frequency band detects the PDCCH signal that mails to this terminal.In addition, using under the situation of a plurality of CCE for a PDCCH signal, PDCCH receiving element 209 will start (number minimum) and output to map unit 214 CCE number.
PDSCH receiving element 210 is extracting reception data (downlink data) based on from PDCCH receiving element 209 downlink resource assignment information input, a plurality of descending units frequency band from separative element 205 PDSCH signals input, a plurality of descending units frequency band.In addition, PDSCH receiving element 210 carries out error detection occurs for the reception data (downlink data) that extract.Then; Result in error detection occurs exists under the situation of mistake for receiving in the data; PDSCH receiving element 210 generates the NACK signal as ack/nack signal; In receiving data under the situation of zero defect; PDSCH receiving element 210 generates ack signal as ack/nack signal, and ack/nack signal is outputed to modulating unit 211.In addition; Multiple-input and multiple-output) etc. 100 send (the Multiple-Input Multiple Output: carry out space division multiplexing through MIMO with PDSCH in the base station; And send under the situation of two data blocks (Transport Block), PDSCH receiving element 210 generates ack/nack signal for each data block.
Modulating unit 211 will be modulated from the ack/nack signal of PDSCH receiving element 210 inputs.In addition, in each descending unit frequency band, the PDSCH signal is carried out space division multiplexing in base station 100, and send under the situation of two data blocks, modulating unit 211 carries out the QPSK modulation for ack/nack signal.On the other hand, 100 send under the situation of a data block in the base station, and modulating unit 211 carries out the BPSK modulation for ack/nack signal.That is to say that modulating unit QPSK signal of 211 generations or bpsk signal are as the ack/nack signal of each descending unit frequency band.Then, the ack/nack signal after modulating unit 211 will be modulated outputs to map unit 214.
Modulating unit 212 will send data (uplink data) and modulate, and the data-signal after the modulation is outputed to DFT (Discrete Fourier transform; Discrete Fourier transform (DFT)) unit 213.
DFT unit 213 will be transformed to the signal of frequency domain from the data-signal of modulating unit 212 inputs, and a plurality of frequency components that will obtain output to map unit 214.
Map unit 214 is according to the ascending resource assignment information from 209 inputs of PDCCH receiving element, will be from the DFT unit data-signals of 213 inputs be mapped to and be configured to the PUSCH of up unit frequency band.In addition; Map unit 214 is according to from the PUCCH area information (information of the starting position in expression PUCCH zone) of broadcast message receiving element 206 inputs, from PCFICH receiving element 208 CFI information input, each descending unit frequency band and from CCE number of PDCCH receiving element input, will be mapped to from the ack/nack signal of modulating unit 211 inputs to be configured to the PUCCH of up unit frequency band.That is to say; Map unit 214 is in the up unit frequency band that this terminal set; Based on according to the CFI information calculations CCE number that go out, that can use each unit frequency band of a plurality of descending units frequency band that this terminal has been set, each unit band setting of a plurality of descending units frequency bands is assigned with the PUCCH zone of ack/nack signal to each unit frequency band of a plurality of descending units frequency band.Then, map unit 214 is mapped to the corresponding PUCCH zone of the descending unit frequency band that used in the distribution with downlink data (that is, with from 209 inputs of PDCCH receiving element the related ACK/NACK resource of CCE number CCE) with ack/nack signal.
For example; As shown in Figure 3; Define the ACK/NACK resource (A/N#0～#17) of PUCCH through frequency expansion sequence (the cyclic shift amount of ZAC (Zero Auto Correlation, zero auto-correlation) sequence) and secondary spread-spectrum sequence piece formula spreading codes (Block-wise spreading code) such as () Walsh (Walsh) sequences.Here, the ACK/NACK resource number is related with CCE number 1 pair of 1 ground, in map unit 214, ack/nack signal be assigned to from CCE number of PDCCH receiving element 209 input related frequency expansion sequence and secondary spread-spectrum sequence.In addition; Sending under the situation of PDSCH signal with a plurality of descending units frequency band; Map unit 214 will be to the ack/nack signal of the PDSCH signal that sent with each descending unit frequency band, distribute to respectively with the distribution of having disposed this PDSCH signal in the corresponding PUCCH zone of the descending unit frequency band of the PDCCH that used, with the distribution of this PDSCH signal in the related ACK/NACK resource of CCE used.
In addition, also can modulating unit 211, modulating unit 212, DFT unit 213 and map unit 214 be set to each unit frequency band.
A plurality of frequency components that IFFT unit 215 will be mapped among the PUSCH are transformed to time domain waveform, and 216 pairs of these time domain waveforms of CP extra cell are added CP.
The structure that radio frequency transmitting element 217 adopts variable transmission frequency band, and based on the band information from 207 inputs of set information receiving element, set and send frequency band.Then, 217 pairs of the radio frequency transmitting elements signal that added CP carries out wireless transmission and handles (up-conversion, D/A conversion etc.) and it is sent via antenna 201.
The details of the action at base station 100 and terminal 200 then, is described.
In following explanation, the setup unit 101 (Fig. 1) of base station 100 to terminal 200 set in the system that downgoing line shown in Figure 4 and uplink be made up of two unit frequency bands respectively, two descending unit frequency bands (unit frequency band 0 and unit frequency band 1) and a up unit frequency band (unit frequency band 0).Therefore; No matter be the PDSCH signal that receives with which descending unit frequency band; That all use at terminal 200 is related with the CCE that in the distribution of this PDSCH signal, has used, be configured to the resource area (ACK/NACK resource) of the PUCCH on the up unit frequency band of unit frequency band 0, and ack/nack signal is sent to base station 100.In addition, in Fig. 4, the PUCCH zone is set at the two ends of the unit frequency band of uplink, and half is sent by frequency hopping at the first half and back of subframe for PUCCH.Therefore, in the following explanation,, a side zone only is described as the PUCCH zone.
In addition, the PDCCH that is configured in each descending unit frequency band shown in Figure 4 is made up of a plurality of CCE (CCE#1, CCE#3, CCE#3......).In addition, ACK/NACK resource #1～# (k+j) shown in Figure 4 waits each ACK/NACK resource, for example with ACK/NACK resource (A/N#0～#17) corresponding respectively shown in Figure 3.In addition, (A/N#0～#17) expression is equivalent to the ACK/NACK resource of 1RB to ACK/NACK resource shown in Figure 3, and under the situation that the ACK/NACK resource more than 18 is set, a plurality of RB are used.In addition, under the situation that a plurality of RB are used, the ACK/NACK resource number from the RB at the two ends of frequency band towards the center in order by additional number.
In addition; As shown in Figure 4; The CFI information of distributing to the OFDM code element number of configuration PDCCH in the descending unit frequency band in the CFI information of PCFICH resource of each descending unit frequency band, the unit's of being illustrated in frequency band 0 is made as CFI0, and the CFI information of the OFDM code element number of configuration PDCCH is made as CFI1 in will the descending unit frequency band of the unit's of being illustrated in frequency band 1.In addition, CFI0 and CFI1 get any value in 1～3 (that is 1～3OFDM the code element).Here, as shown in Figure 4, the control unit 102 of base station 100 will be made as k at the spendable CCE number of descending unit frequency band of unit frequency band 0, and (CCE#1～#k) is made as L with the CFI0 of unit frequency band 0.In addition, the control unit 102 CCE number that will can use at the descending unit frequency band of unit frequency band 1 is made as j (CCE#1～#j).
In addition; The allocation units 105 (Fig. 1) of base station 100 have been given any of CCE#1～#j of descending unit frequency band of CCE#1～#k and unit frequency band 1 of descending unit frequency band of the unit frequency band 0 at terminal 200 to setting, distribute the PDCCH signal of each descending unit frequency band respectively.
In addition, the broadcast message generation unit 108 of base station 100 generates the system information of the regional starting position (resource number) of the PUCCH of the up unit frequency band that is used to represent the unit frequency band 0 related with the descending unit frequency band of unit frequency band 0.In addition, broadcast message generation unit 108 generates the system information of the regional starting position (resource number) of the PUCCH of the up unit frequency band that is used to represent the unit frequency band 1 related with the descending unit frequency band of unit frequency band 1.For example, these system informations are included in the SIB2.
The broadcast message receiving element 206 at terminal 200 reads the starting position (resource number) in the PUCCH zone in up unit that comprise respectively, related with each the descending unit frequency band frequency band in the system information (SIB2) of unit frequency band 0 shown in Figure 4 and unit frequency band 1.That is to say; The starting position in PUCCH in the up unit frequency band of broadcast message receiving element 206 unit's of reading frequency band 0 from the SIB2 (not shown) of the descending unit frequency band of unit frequency band 0 shown in Figure 4 zone, and from the SIB2 (not shown) of the descending unit frequency band of unit frequency band 1 shown in Figure 4 the starting position in the PUCCH zone in the up unit frequency band of the unit's of reading frequency band 1.
In addition, PCFICH receiving element 208 from the PCFICH signal of the PCFICH resource of having distributed to unit frequency band 0 shown in Figure 4, extract CFI0 (=L), and from the PCFICH signal of the PCFICH resource of having distributed to unit frequency band 1, extract CFI1.
Then, PDCCH receiving element 209 confirms in the descending unit frequency band of unit frequency band 0, to be configured the OFDM code element number of PDCCH based on CFI0, and confirms in the descending unit frequency band of unit frequency band 1, to be configured the OFDM code element number of PDCCH based on CFI1.Then, PDCCH receiving element 209 carries out blind decoding with the CCE in the search volume (not shown) of unit frequency band 0 and unit frequency band 1, confirms to be assigned with the CCE of the PDCCH signal (resource allocation information) that mails to this terminal.Here, the CCE that is assigned with the PDCCH signal (resource allocation information) that mails to this terminal sometimes has a plurality of.Thus; As shown in Figure 4; The PDCCH signal that PDCCH receiving element 209 will have been distributed to the PDCCH signal of the one or more CCE among the CCE#1～#k of descending unit frequency band of unit frequency band 0 and distribute to the one or more CCE among the CCE#1～#j of descending unit frequency band of unit frequency band 1, being judged to be is the PDCCH signal that mails to this terminal.
In addition; Map unit 214 is in the up unit frequency band of unit frequency band 0 shown in Figure 4; The ack/nack signal of the ack/nack signal of the downlink data that will be assigned with the one or more CCE among the CCE#1～#k of applying unit frequency band 0 and downlink data that the one or more CCE among the CCE#1～#j of applying unit frequency band 1 have been assigned with is mapped to the corresponding PUCCH zone of descending unit frequency band of having used in the distribution with each downlink data.
Here; CCE number of the CCE that has used in the distribution through spendable CCE number and downlink data in each the descending unit frequency band that calculates based on CFI information (here for CFI0 and CFI1) (using under the situation of a plurality of CCE CCE number) for beginning, the PUCCH zone (ACK/NACK resource) of calculating the ack/nack signal that is used to send the downlink data that the CCE that uses each descending unit frequency band has been assigned with.Particularly, ask through following formula (1) at first that spendable CCE counts N in the descending unit frequency band of the frequency band i of unit of certain subframe CCE(i).
N CCE(i)＝(L(i)*N RE_toal-N RS-N PCFICH-N PHICH)/N RE_CCE …(1)
Wherein, the unit of i representation unit frequency band frequency reel number (in Fig. 4, i=0,1).In addition, L (i) representes the CFI information (, L (i)=1～3) of the descending unit frequency band (the frequency band i of unit) of certain subframe, N here RE_totalRE (Resource Element) number that comprises in the expression 1OFDM code element, N RSThe RE number that uses in the contrast signal of representing to comprise in the individual OFDM code element of L (i), N PCFICHThe RE number that uses in the PCFICH signal of representing to comprise in the individual OFDM code element of L (i), N PHICHThe PHICH that comprises in the individual OFDM code element of expression L (i) (Physical Hybrid-ARQ Indicator Channel: the RE number that uses in the signal (descending ack/nack signal) the automatic re-send request may indicating channel of physical mixed), N RE_CCEThe RE number of representing every 1CCE.For example, in LTE, N PCFICH=16, N RE_CCE=36.N in addition, RSDepend on the antenna port number, can calculate by terminal 200.In addition, N PHICHCan be according to calculating by terminal 200 by the PHICH information of broadcast message notice.In addition, terminal 200 for example uses value before transmission 4 subframes regularly of ack/nack signal as L (i).This is because ack/nack signal carry out decoding processing etc. for the PDCCH signal that receives and PDSCH signal after, is sent in the terminal after 4 subframes.In addition, RE is the resource units of 1 subcarrier in the expression 1OFDM code element.
For example, through type (1) calculate, spendable CCE counts N in constituent parts frequency band i shown in Figure 4 (wherein, i=0,1) CCE(i) be N CCE(0)=k and N CCE(1)=j.
In addition, use certain subframe the frequency band i of unit descending unit frequency band CCE and the ack/nack signal of the downlink data that has been assigned with is mapped to PUCCH resource (ACK/NACK resource number) n that calculates according to following formula (2) PUCCH
n PUCCH = N PUCCH + Σ m = 0 i - 1 N CCH ( m ) + n CCH ( i ) . . . ( 2 )
Wherein, N PUCCHExpression is by the starting position (resource number) in the PUCCH zone SIB2 notice, corresponding with the descending unit frequency band of the frequency band i of unit of the descending unit frequency band of the frequency band i of unit, n CCE(i) CCE number of the CCE that PDCCH has used in sending in the descending unit frequency band of representation unit frequency band (i+1).In addition, in formula (2), the starting position N by the PUCCH zone of SIB2 notice has been described PUCCHSituation, but, under the situation of the PUCCH resource of using in the transmission of definition ack/nack signal (ACK/NACK resource), in formula (2), do not need N at the relative position of the starting position in the whole PUCCH zone that in up unit frequency band, disposes based on distance PUCCH
For example, in constituent parts frequency band i shown in Figure 4 (wherein, i=0,1), the CCE n in formula (2) CCE(i) be n CCE(0)=1～k and n CCE(1)=1～j.
Therefore, as shown in Figure 4, map unit 214 is according to formula (2), will from by the SIB2 notice of the descending unit frequency band of unit frequency band 0, with the corresponding regional starting position N of PUCCH of descending unit frequency band of unit frequency band 0 PUCCHPlay k ACK/NACK resource #1～#k, it is regional to be set at the PUCCH corresponding with the descending unit frequency band of unit frequency band 0.That is to say that as shown in Figure 4, ACK/NACK resource #1～#k is related respectively for the CCE#1～#k of the descending unit frequency band of unit frequency band 0.
Then, as shown in Figure 4, map unit 214 is counted N based on the CCE that calculates according to formula (1) CCE(0)=the starting position N in the PUCCH zone of k and unit frequency band 0 PUCCH, confirm the corresponding regional starting position (N of PUCCH of downstream bands with unit frequency band 1 with formula (2) PUCCH+ N CCE(0)).In addition, map unit 214 is according to formula (2), will be from the starting position (N PUCCH+ N CCE(0)) plays j ACK/NACK resource # (k+1)～# (k+j) and be set at the PUCCH zone corresponding with the descending unit frequency band of unit frequency band 1.That is to say that as shown in Figure 4, ACK/NACK resource # (k+1)～# (k+j) is related respectively for the CCE#1～#j of the descending unit frequency band of unit frequency band 1.
In addition, map unit 214 will be to CCE#1～#k of using unit frequency band 0 shown in Figure 4 respectively and the ack/nack signal of the downlink data that has been assigned be mapped to respectively corresponding to the ACK/NACK resource #1～#k in the PUCCH zone of unit frequency band 0.In addition; As shown in Figure 4; Map unit 214 will be to the CCE#1～#j of applying unit frequency band 1 respectively and the ack/nack signal of the downlink data that has been assigned be mapped to respectively corresponding to the ACK/NACK resource # (k+1) in the PUCCH zone of unit frequency band 1～# (k+j).That is to say that map unit 214 is spendable CCE number in the descending unit frequency band of unit frequency band 0 based on CFI information (among Fig. 4 for CFI0), set the corresponding regional starting position of PUCCH of descending unit frequency band changeably with unit frequency band 1.In other words, map unit 214 is spendable CCE number in the descending unit frequency band of unit frequency band 0 based on CFI information (among Fig. 4 for CFI0), sets the corresponding regional end position of PUCCH of descending unit frequency band with unit frequency band 0 changeably.Particularly, map unit 214 is guaranteed to be equivalent to the corresponding number of CCE number that can use in the descending unit frequency band with unit frequency band 0 with the corresponding PUCCH zone of descending unit frequency band of unit frequency band 0.
On the other hand, same with terminal 200, the ACK/NACK receiving element 122 of base station 100 is based on CFI0 and CFI1 from control unit 102 inputs, and the CCE that calculates each descending unit frequency band according to formula (1) counts NCCE.In addition; Same with terminal 200, ACK/NACK receiving element 122 set the PUCCH corresponding with the descending unit frequency band of unit frequency band 0 regional (ACK/NACK resource #1 shown in Figure 4～#k) and with the corresponding PUCCH regional (ACK/NACK resource # (k+1) shown in Figure 4～# (k+j)) of descending unit frequency band of unit frequency band 1.In addition; ACK/NAACK receiving element 122 in the PUCCH zone corresponding with each descending unit frequency band, from CCE number of the CCE that has distributed the PDCCH signal corresponding ACK/NACK resource extract ack/nack signal respectively to the PDSCH signal of each descending unit frequency band.
Like this; Terminal 200 is in the up unit frequency band that this terminal set; Based on according to be set to the CFI information calculations of each descending unit frequency band at this terminal go out, spendable CCE number (the CCE number that base station 100 can be sent) in each descending unit frequency band, the regional starting position of PUCCH that the ground control of every subframe is corresponding with each descending unit frequency band.
Here, be configured among the PUCCH to each up unit frequency band required ACK/NACK resource and depend on that configuration gives the CCE number that uses among the PDCCH of each descending unit frequency band.In addition, it is different in every subframe to be configured the CCE number that uses among the PDCCH to each descending unit frequency band.That is to say, in each up unit frequency band, different to every subframe with the PUCCH zone (with the related ACK/NACK number of resources of the CCE of each descending unit frequency band) that each descending unit frequency band is corresponding.
But terminal 200 is passed through based on the CFI information calculations spendable CCE number in each descending unit frequency band to every subframe notice, thus the control PUCCH regional starting position corresponding with each descending unit frequency band.Therefore, terminal 200 can guarantee to be equivalent to and the corresponding ACK/NACK number of resources of the CCE number that can use at each descending unit frequency band (the CCE number that the base station can be sent) to every subframe.That is to say that the corresponding ACK/NACK resource of the CCE number of cutting apart of PDSCH signal can be guaranteed with spendable CCE number in each descending unit frequency band, promptly in each descending unit frequency band, to be used in terminal 200.That is to say, in terminal 200, in the up unit frequency band of unit frequency band 0 shown in Figure 4, only guarantee required minimal ACK/NACK resource respectively for unit frequency band 0 and unit frequency band 1 both sides' descending unit frequency band.
Like this, according to this execution mode, spendable CCE number in each descending unit frequency band is calculated based on the CFI information of every subframe being notified from the base station in the terminal, and based on the CCE number that calculates, control is to the PUCCH zone of each descending unit frequency band.Thus, the terminal can be set in the up unit frequency band at this terminal, and every subframe is guaranteed and is set to the corresponding required minimal PUCCH zone (ACK/NACK resource) of each descending unit frequency band at this terminal.In addition, the terminal is that system information (SIB) and CFI information are controlled the PUCCH zone based on existing signaling among the LTE.That is to say, in this execution mode, need not LTE-A is newly appended the signaling that mails to the terminal from the base station.Therefore; According to this execution mode; Even under the situation of sending from a up unit frequency band to a plurality of ack/nack signals of the downlink data that sent respectively with a plurality of descending units frequency band; Also can not increase signaling, and reduce the PUCCH zone (ACK/NACK number of resources) in the up unit frequency band.
In addition, according to this execution mode, through the PUCCH region limits in up unit frequency band, needs guaranteed to Min., thereby can guarantee the PUSCH resource more, so can improve the data throughout of uplink.In addition, in descending unit frequency band, need not newly to append signaling,, thereby can prevent that the data throughout of downgoing line from descending so the PDCCH resource does not increase.
In addition, according to this execution mode, the terminal makes the PUCCH zone corresponding with each descending unit frequency band adjacent through being set in the up unit frequency band at this terminal, is configured in a place thereby all PUCCH zones are gathered.Therefore, the terminal can be for the more continuous resource of PUSCH signal allocation (RB).Here, under the RB situation that the base station is distributed continuous for terminal distribution PUSCH signal the time, only notice beginning RB number gets final product with RB number (or finishing RB number), so can further reduce the notice bit that is used to notify resource allocation, can improve allocation efficiency of resource.
In addition, for example, as LTE-A, each descending unit frequency band is that the broadband (for example, the 20MHz frequency band under) the situation, can be not guarantee to be the maximum number to be equivalent to guaranteed by the OFDM code element number (being the 3OFDM code element) of maximum here with the CCE of each descending unit frequency band yet.This be because, be under the situation in broadband at each descending unit frequency band, the resource of the every 1OFDM code element that can use among the PDCCH is more.That is to say, in the subframe of majority, need maximum 3OFDM code element little as the probability of the OFDM code element number that uses among the PDCCH (CFI information).That is to say, even maximum CCE number is not guaranteed in base station 100, also can be for the sufficient CCE of a plurality of terminal distribution, and can obtain sufficient frequency scheduling effect.For example, in 1 subframe, can in the descending unit frequency band of 20MHz frequency band, guarantee under the situation of maximum 80 CCE half i.e. CCE of 40 that maximum number also can only be guaranteed in base station 100.Thus, terminal 200 only to the CCE number that goes out based on the CFI information calculations half promptly 40 CCE guarantee that the PUCCH zone gets final product, thereby can reduce the PUCCH zone, can improve the throughput of upstream data.
In addition, in this execution mode, the setting of the PUCCH in the up unit frequency band of unit frequency band 0 shown in Figure 4 has been described, as the setting in a routine PUCCH zone.But, in the present invention,, also can carry out the setting in PUCCH zone equally with above-mentioned execution mode for the PUCCH of the up unit frequency band of unit frequency band 1 shown in Figure 4.
(execution mode 2)
In this execution mode; Will be set in a plurality of descending unit frequency band at terminal, be set to the related corresponding PUCCH zone of descending unit frequency band of the up unit frequency band at terminal; Than and the corresponding PUCCH of descending unit frequency band beyond the related descending unit frequency band of up unit frequency band regional, be set in the end of up unit frequency band.
This execution mode below is described particularly.In following explanation, the up unit frequency band of the frequency band i of unit (wherein, i is a unit reel number frequently) and the descending unit frequency band of the frequency band i of unit are related.Here, notify and the related up unit frequency band of descending unit frequency band with the broadcast message of descending unit frequency band.In addition; The broadcast message of the system information (SIB2) of the descending unit frequency band through comprising the frequency band i of the unit of distributing to, the PUCCH area information (PUCCH config shown in Figure 5) of starting position in PUCCH zone up unit frequency band, corresponding with the descending unit frequency band of the frequency band i of unit that will be used for representation unit frequency band i from the base station 100 (Fig. 1) notice give terminal 200 (Fig. 2).
For example; In Fig. 5; The broadcast message generation unit 108 of base station 100 will be used for the system information (SIB2) of starting position (resource number) in the PUCCH zone up unit frequency band, corresponding with the descending unit frequency band of unit frequency band 0 (unit frequency band 1) of representation unit frequency band 0 (unit frequency band 1), set the descending unit frequency band of giving unit frequency band 0 (unit frequency band 1).
Below, the establishing method 1 and 2 in PUCCH zone (ACK/NACK resource) is described.
< establishing method 1 >
In this establishing method; Terminal 200 is being set in the up unit frequency band at this terminal; Descending unit frequency band from a plurality of descending unit frequency band that this terminal has been set, related with this up unit frequency band; According to the order of the descending unit frequency band that is predetermined (unit frequently reel number), will set in order from starting position with the corresponding PUCCH zone of a plurality of descending units frequency bands with the said resource area broadcasted with the said up unit related descending unit frequency band of frequency band.
Here; In the system that the setup unit 101 (Fig. 1) of base station 100 is made up of downgoing line shown in Figure 5 and downgoing line two unit frequency bands respectively, two descending unit frequency bands (unit frequency band 0 and unit frequency band 1) and a up unit frequency band (unit frequency band 0) set and give terminal 1, and two descending unit frequency bands (unit frequency band 0 and unit frequency band 1) and a up unit frequency band (unit frequency band 1) set give terminal 2.Here, terminal 1 and terminal 2 have with execution mode 1 in the identical structure in terminal 200 (Fig. 2).
In addition, same with execution mode 1 (Fig. 4) shown in 5, the CFI information of unit frequency band 0 is made as CFI0, and the CFI information of unit frequency band 1 is made as CFI1.In addition, same with execution mode 1 (Fig. 4) as shown in Figure 5, the CCE number that will can use at the descending unit frequency band of unit frequency band 0 is made as k (CCE#1～#k), and will be made as j (CCE#1～#j) at the spendable CCE number of descending unit frequency band of unit frequency band 1.
Therefore, the allocation units 105 (Fig. 1) of base station 100 distribute the PDCCH signal at each terminal respectively to the CCE#1～#j of the descending unit frequency band of the CCE#1～#k of the descending unit frequency band of unit frequency band 0 that set to give terminal 1 and terminal 2 and unit frequency band 1 any.
In addition; In the up unit frequency band of unit frequency band 0 shown in Figure 5 or unit frequency band 1; The ack/nack signal of the ack/nack signal of the downlink data that each map unit 214 at terminal 1 and terminal 2 will be assigned with the CCE#1～#k of applying unit frequency band 0 respectively and downlink data that the CCE#1～#j of applying unit frequency band 1 respectively has been assigned with, it is regional to be mapped to the corresponding PUCCH of the descending unit frequency band that uses in the distribution with each downlink data.
Here; From the order of the descending unit frequency band related according to unit frequency reel number with each up unit frequency band; The starting position of the PUCCH zone of the descending unit frequency band broadcasting related with each up unit frequency band (that is, with) plays the PUCCH zone (ACK/NACK resource) of setting the ack/nack signal that is used to send the downlink data that the CCE that uses each descending unit frequency band has been assigned with in order from the end of each up unit frequency band.
Particularly, in the up unit frequency band of the frequency band i of unit, from the starting position in the PUCCH zone of the SIB2 notice of the descending unit frequency band through the frequency band i of unit, according to unit frequency band (i), unit frequency band ((i+1) mod N Cc), unit frequency band ((i+2) mod N Cc) ..., the frequency band ((i+N of unit Cc-1) mod N Cc) order, set the PUCCH corresponding zone with each descending unit frequency band.Wherein, computing mod representes modular arithmetic, N CcRepresent descending unit frequency band number.
That is to say; As shown in Figure 5; The map unit 214 at terminal 1 is in the up unit frequency band of unit frequency band 0; Will from the SIB2 notice of the descending unit frequency band through unit frequency band 0, with corresponding starting position k the regional ACK/NACK resource #1～#k of PUCCH of descending unit frequency band of unit frequency band 0, it is regional to be set at the PUCCH corresponding with the descending unit frequency band of unit frequency band 0.Then; Same with execution mode 1; As shown in Figure 5; The map unit 214 at terminal 1 will be from j ACK/NACK resource # (the k+1)～# (k+j) in starting position (# (k+1)) in the PUCCH zone corresponding with the descending unit frequency band of unit frequency band 1 (=(0+1) mod 2), and it is regional to be set at the PUCCH corresponding with the descending unit frequency band of unit frequency band 1.That is to say; As shown in Figure 5; Order according to the descending unit frequency band of the descending unit frequency band of unit frequency band 0, unit frequency band 1; (that is the starting position in the PUCCH zone of the SIB2 broadcasting of the descending unit frequency band through unit frequency band 0) plays that to set the PUCCH corresponding with each descending unit frequency band in order regional from the end of the up unit frequency band of unit frequency band 0.
On the other hand; As shown in Figure 5; The map unit 214 at terminal 2 is in the up unit frequency band of unit frequency band 1; Will from the SIB2 notice of the descending unit frequency band through unit frequency band 1, with corresponding starting position j the regional ACK/NACK resource #1～#j of PUCCH of descending unit frequency band of unit frequency band 1, it is regional to be set at the PUCCH corresponding with the descending unit frequency band of unit frequency band 1.Then; As shown in Figure 5; The map unit 214 at terminal 2 will be from k ACK/NACK resource # (the j+1)～# (j+k) in starting position (# (j+1)) in the PUCCH zone corresponding with the descending unit frequency band of unit frequency band 0 (=(1+1) mod 2), and it is regional to be set at the PUCCH corresponding with the descending unit frequency band of unit frequency band 0.That is to say; As shown in Figure 5; Order according to the descending unit frequency band of the descending unit frequency band of unit frequency band 1, unit frequency band 0; (that is the starting position in the PUCCH zone of the SIB2 broadcasting of the descending unit frequency band through unit frequency band 1) plays that to set the PUCCH corresponding with each descending unit frequency band in order regional from the end of the up unit frequency band of unit frequency band 1.
That is to say; In each up unit frequency band; The PUCCH that descending unit frequency band beyond the descending unit frequency band related with each up unit frequency band is corresponding is regional, is set at the end of up unit frequency band with the related respectively corresponding PUCCH zone of descending unit frequency band of each up unit frequency band.In addition; From set with the frequency band of the corresponding PUCCH of the related respectively descending unit frequency band of each up unit frequency band (promptly; The end of up unit frequency band) rises; Towards the centre frequency of up unit frequency band (promptly; The inboard of up unit frequency band), set the related respectively corresponding PUCCH zone of descending unit frequency band descending unit frequency band in addition of frequency band in order with up unit.Here; Same with execution mode 1, each terminal (terminal 200) is based on the CFI information of each descending unit frequency band and to the corresponding regional starting position of PUCCH of the related respectively descending unit frequency band descending unit frequency band in addition of every subframe control and each up unit frequency band.
In LTE-A, not only require to take in the LTE-A terminal, and require to take in the LTE terminal.Here, with regard to the LTE terminal, be set a up unit frequency band and a descending unit frequency band.In addition, at this moment,, must be set be mutually related up unit frequency band and descending unit frequency band with regard to the LTE terminal.That is to say, in the up unit frequency band that the LTE terminal has been set, the SIB2 (broadcast message) of the descending unit frequency band that the PUCCH zone passage that use at the LTE terminal is related with this up unit frequency band and being set regularly.
Therefore, in this establishing method, in the up unit frequency band that use at the LTE terminal, the corresponding PUCCH zone of the descending unit frequency band related with this up unit frequency band (the descending unit frequency band that use at the LTE terminal) must be configured in the end of up unit frequency band.In addition; Based on CFI information; Than the PUCCH zone corresponding with the descending unit frequency band of LTE terminal use; The PUCCH zone of the descending unit frequency band beyond the related descending unit frequency band of the up unit frequency band that uses with the LTE terminal (for example, only the descending unit frequency band that uses of LTE-A terminal) correspondence is configured in the inboard of up unit frequency band.Thus, can will dispose continuously with a plurality of descending units each corresponding PUCCH zone of frequency band from the end of up unit frequency band towards the carrier frequency (centre frequency) of up unit frequency band.That is to say; Same with execution mode 1; The regional starting position of PUCCH that terminal 200 is can be based on the descending unit frequency band beyond the descending unit frequency band related in the up unit frequency band that CFI information set changeably with use at the LTE terminal corresponding, and seamlessly set for the end of the up unit frequency band at this terminal from setting to make the regional continuous frequency band of PUCCH.Therefore, same according to this establishing method with execution mode 1, the PUCCH zone can be suppressed to Min..
Like this,,, also can support the LTE terminal at each up unit frequency band even under the situation of LTE-A terminal and LTE terminal coexistence according to this establishing method, and same with execution mode 1, reduce the PUCCH zone.
In addition; According to this establishing method; In certain up unit frequency band; The starting position is regional (for example through the PUCCH that CFI information is controlled; The PUCCH zone corresponding) with the descending unit frequency band of only LTE-A terminal use; Compare with regional, be configured in the inboard changeably corresponding to the corresponding PUCCH of the descending unit frequency band of this up unit frequency band.Thus, even inferior in the less situation of CFI information, under the less situation of the stock number of PUCCH, the end that is configured in up unit frequency band is also always gathered in the PUCCH zone.Therefore, according to this establishing method, the resource in continuous broadband can be guaranteed the resource as PUSCH, and can improve allocation efficiency of resource.
In addition, according to this establishing method, based on the starting position in the PUCCH zone of the SIB2 notice through the descending unit frequency band related and the descending units N of system with up unit frequency band Cc,, set the PUCCH zone at each up unit frequency band order according to the unit frequency band that has preestablished.Therefore, the terminal can only be used existing control information and confirmed the PUCCH zone corresponding with all descending unit frequency bands uniquely, and does not need new signaling.
In addition, in this establishing method, the unit frequency band number that system has been described is the situation of two (Fig. 5).But among the present invention, the unit frequency band number of system is not limited to two situation.For example, the unit frequency band number of use Fig. 6 illustrative system is 3 situation.As shown in Figure 6; In the up unit frequency band of unit frequency band 0; From the end of up unit frequency band (starting position in the PUCCH zone of the SIB2 notice through unit frequency band 0), it is regional to set the PUCCH corresponding with each descending unit frequency band of unit frequency band 0, unit frequency band 1, unit frequency band 2 in order.Equally; As shown in Figure 6; In the up unit frequency band of unit frequency band 1; From the end of up unit frequency band (starting position in the PUCCH zone of the SIB2 notice through unit frequency band 1), it is regional to set the PUCCH corresponding with each descending unit frequency band of unit frequency band 1, unit frequency band 2, unit frequency band 0 in order.Up unit frequency band for unit frequency band 2 also is same.
< establishing method 2 >
In this establishing method; Terminal 200 is being set in the up unit frequency band at this terminal; From be set to descending unit frequency band a plurality of descending unit frequency band at this terminal, related with this up unit frequency band begin; According to the order of the near descending unit frequency band of the carrier frequency of the distance descending unit frequency band related, begin to set in regular turn the corresponding PUCCH zone of frequency band with a plurality of descending units from the end of up unit frequency band with up unit frequency band.
In following explanation, the unit frequency band number of illustrative system is 3 a situation.
For example; As shown in Figure 7; In the up unit frequency band of unit frequency band 0; From the end of up unit frequency band (starting position in the PUCCH zone of the SIB2 notice through unit frequency band 0); According to the order of unit frequency band 0, unit frequency band 1, unit frequency band 2, be set the PUCCH zone corresponding with each descending unit frequency band.That is to say; Be set unit frequency band 0 up unit frequency band terminal 200 according to the PUCCH zone corresponding with the descending unit frequency band of unit frequency band 0, with apart from the corresponding PUCCH zone of the descending unit frequency band of the nearest unit frequency band 1 of the carrier frequency of the descending unit frequency band of unit frequency band 0, with the corresponding regional order of PUCCH of descending unit frequency band apart from the carrier frequency unit frequency band 2 farthest of the descending unit frequency band of unit frequency band 0, it is regional to set each PUCCH in order from the end of the up unit frequency band of unit frequency band 0.
On the other hand; As shown in Figure 7; In the up unit frequency band of unit frequency band 2; From the end of up unit frequency band (starting position in the PUCCH zone of the SIB2 notice through unit frequency band 2); According to the order of unit frequency band 2, unit frequency band 1, unit frequency band 0, set the PUCCH zone corresponding with each descending unit frequency band.That is to say; Be set unit frequency band 2 up unit frequency band terminal 200 according to the PUCCH zone corresponding with the descending unit frequency band of unit frequency band 2, with apart from the corresponding PUCCH zone of the descending unit frequency band of the nearest unit frequency band 1 of the carrier frequency of the descending unit frequency band of unit frequency band 2, with the corresponding regional order of PUCCH of descending unit frequency band apart from the carrier frequency unit frequency band 0 farthest of the descending unit frequency band of unit frequency band 2, it is regional to set each PUCCH in order from the end of the up unit frequency band of unit frequency band 2.
In addition; In Fig. 7; At the unit frequency band 1 of the central authorities that are positioned at a plurality of units frequency band (promptly; The unit frequency band adjacent) in the up unit frequency band with unit frequency band 0 and unit frequency band 2; With Fig. 6 of establishing method 1 likewise; According to the order of unit frequency band 1, unit frequency band 2, unit frequency band 0, set the PUCCH zone corresponding in order from the end of up unit frequency band with each descending unit frequency band.But, in the up unit frequency band of unit frequency band 1, also can set the PUCCH zone corresponding in order from the end of up unit frequency band according to the order of unit frequency band 1, unit frequency band 0, unit frequency band 2 with each descending unit frequency band.In addition, same with execution mode 1, the starting position in the PUCCH zone corresponding with each descending unit frequency band is set changeably based on CFI information in terminal 200.
Here, when importing initial stage of LTE-A system etc., suppose the more situation in terminal that has been defined reception bandwidth (for example, 40MHz frequency band).For example, suppose following situation, that is, in Fig. 7,, then only use the terminal of continuous two descending unit frequency bands (40MHz frequency band) reception downlink data more if per 1 unit frequency band is made as 20MHz.At this moment, according to this establishing method, two the PUCCH zones corresponding with two continuous descending unit frequency bands, the possibility that is configured on the adjacent frequency band in the up unit frequency band uprises, and is gathered the end that is configured in up unit frequency band.
For example; In Fig. 7; Terminal 200 is set two descending unit frequency bands of unit frequency band 1 and unit frequency band 2; And set under any situation of a up unit frequency band of unit frequency band 1 or unit frequency band 2, terminal 200 will the PUCCH zone corresponding with each descending unit frequency band be set in the end of up unit frequency band.Particularly, the terminal 200 of up unit frequency band that has been set unit frequency band 1 shown in Figure 7 is according to the order of unit frequency band 1, unit frequency band 2, will the PUCCH zone corresponding with each descending unit frequency band be set in the end of up unit frequency band.Equally, the terminal 200 of up unit frequency band that has been set unit frequency band 2 shown in Figure 7 is according to the order of unit frequency band 2, unit frequency band 1, will the PUCCH zone corresponding with each descending unit frequency band be set in the end of up unit frequency band.Thus; In each up unit frequency band; Untapped PUCCH zone (, being the corresponding PUCCH zone of descending unit frequency band with unit frequency band 0) can be set in the frequency band of the interior inside of up unit frequency band here, so can guarantee more continuous resource for PUSCH.
In addition; Even receive the CFI information that the descending unit frequency band beyond the reception bandwidth at this terminal is not known at band-limited terminal; Also can suitably set PUCCH zone (ACK/NACK resource), said PUCCH zone is assigned with the ack/nack signal to the downlink data that mails to this terminal.For example; In Fig. 7; Terminal 200 has been set under the situation of two descending unit frequency bands of unit frequency band 1 and unit frequency band 2; Even the CFI information of unit frequency band 0 is not known at terminal 200, also can only set the PUCCH zone of up unit frequency band (unit frequency band 1 or unit frequency band 2) based on the CFI information of unit frequency band 1 and unit frequency band 2.
Like this, according to this establishing method, even exist under a large amount of situation that receive the limited terminal of bandwidth, the possibility that is used in order from the PUCCH zone of the end that has been set in each up unit frequency band also uprises.That is to say, be not received the PUCCH zone of using at the limited terminal of bandwidth and be set on the frequency band of the inside in the up unit frequency band, so can guarantee the resource of the resource in continuous broadband as PUSCH.
In addition; In this establishing method; The PUCCH that descending unit frequency band beyond the descending unit frequency band related with this up unit frequency band is corresponding is regional, is set at the end of up unit frequency band with the up unit related corresponding PUCCH zone of descending unit frequency band of frequency band.In addition, same with execution mode 1, the starting position in the PUCCH zone corresponding with each descending unit frequency band is set at terminal 200 changeably based on CFI information.Therefore, same according to this establishing method with establishing method 1, even under the situation of LTE-A terminal and LTE terminal coexistence, also can support the LTE terminal at each up unit frequency band, and also same with execution mode 1, reduce the PUCCH zone.
In addition, in this establishing method, the unit frequency band number that system has been described is the situation of 3 (Fig. 7).But among the present invention, the unit frequency band number of system is not limited to 3 situation.For example, the unit frequency band number of illustrative system is 4 a situation.Here, suppose each up unit frequency band and each descending unit frequency band related (not shown) of unit frequency band 0～4.Therefore, in the up unit frequency band of unit frequency band 0,, set the PUCCH zone corresponding in order from the end of up unit frequency band with each descending unit frequency band according to the order of unit frequency band 0,1,2,3.Equally, in the up unit frequency band of unit frequency band 1, (perhaps, unit frequency band 1,2,0,3) order is set the PUCCH zone corresponding with each descending unit frequency band in order from the end of up unit frequency band according to unit frequency band 1,0,2,3.Equally, in the up unit frequency band of unit frequency band 2, (perhaps, unit frequency band 2,3,1,0) order is set the PUCCH zone corresponding with each descending unit frequency band in order from the end of up unit frequency band according to unit frequency band 2,1,3,0.Equally, in the up unit frequency band of unit frequency band 3,, set the PUCCH zone corresponding in order from the end of up unit frequency band with each descending unit frequency band according to the order of unit frequency band 3,2,1,0.
More than, the establishing method 1 and 2 in the PUCCH zone of this execution mode has been described.
Like this, in this execution mode, in LTE-A,, also can support the LTE terminal, and same, can not increase signaling and reduce the PUCCH zone (ACK/NACK number of resources) in the up unit frequency band with execution mode 1 even under the situation of LTE terminal coexistence.
In addition, in this execution mode, up unit frequency band and the descending unit frequency band system for symmetry has been described.But the present invention can be applicable to that also up unit frequency band and descending unit frequency band are asymmetrical situation.For example; As shown in Figure 8; At up unit frequency band (two up unit frequency bands) and descending unit frequency band (three descending unit frequency bands) is under the asymmetrical situation, and a certain up unit frequency band (unit frequency band 1 among Fig. 8) might be related with a plurality of descending units frequency band (unit frequency band 1 and 2 among Fig. 8).At this moment, the SIB2 separately of the descending unit frequency band through unit frequency band 1 shown in Figure 8 and the descending unit frequency band of unit frequency band 2, the starting position in PUCCH zone that will be corresponding with each descending unit frequency band is notified to the terminal.At this moment; As shown in Figure 8; In the up unit frequency band of unit frequency band 1, the PUCCH zone corresponding with each descending unit frequency band of unit frequency band 1 and unit frequency band 2 set regularly based on the regional starting position of PUCCH that the SIB2 through each descending unit frequency band notifies in the terminal.On the other hand, with above-mentioned establishing method 1 or establishing method 2 likewise, the PUCCH that the terminal sets changeably and the descending unit frequency band beyond the descending unit frequency band related in the up unit frequency band of unit frequency band 1 (being unit frequency band 0 among Fig. 8) is corresponding is regional.
In addition, in Fig. 6～Fig. 8, the starting position in the PUCCH zone through SIB2 notice also can be in the end of the frequency band of up unit frequency band, and the base station can freely be set.For example, in LTE, the base station is applicable to that transmission is by being called N being provided with RB (2)The skew of fixed resource of CQI information of parameter setting after, set the PUCCH zone that ack/nack signal is used.At this moment, through with predetermined fixed ground resource settings that guarantee, that be used to send required a certain CQI information in the end of the frequency band of unit frequency band, thereby can likewise guarantee more continuous and wideer resource with the above-mentioned effect that has illustrated to PUSCH.
(execution mode 3)
In this execution mode, the base station is set public CFI information respectively between a plurality of descending units frequency band.
The control unit 102 (Fig. 1) of the base station 100 of this execution mode is through being set between a plurality of descending unit frequency band at each terminal; The downlink data that mails to each terminal is distributed equably; Thereby control, so that the CCE number that uses in the distribution of downlink data is impartial between a plurality of descending units frequency band.That is to say that control unit 102 makes the OFDM code element number that uses in the transmission of PDCCH signal identical at all descending unit frequency bands.Therefore, control unit 102 is set public CFI information respectively in a plurality of descending units frequency band.Then, the CFI information that will set of control unit 102 outputs to PCFICH generation unit 106.
PCFICH generation unit 106 generates the PCFICH signal based on from the CFI information of control unit 102 input, i.e. public CFI information each descending unit frequency band.
The details of the action at base station 100 and terminal 200 in this execution mode then, is described.Here, as shown in Figure 9, the unit frequency band number of illustrative system is two a situation.In addition, two the descending unit frequency bands of unit frequency bands 0 and unit frequency band 1 and the up unit frequency band of unit frequency band 0 are set for terminal 200 in base station 100.
As shown in Figure 9, the control unit 102 of base station 100 is set public CFI information in each descending unit frequency band of unit frequency band 0 and unit frequency band 1.
In addition, spendable CCE number is set at k in the descending unit frequency band of the unit frequency band 0 that will set terminal 200 of control unit 102 and unit frequency band 1.That is to say that control unit 102 is set spendable CCE number in each descending unit frequency band for terminal 200 equably.Therefore, allocation units 105 are distributed to the PDCCH signal of each descending unit frequency band respectively any of CCE#1～#k of descending unit frequency band of CCE#1～#k and unit frequency band 1 of the descending unit frequency band of the unit frequency band 0 that terminal 200 has been set.
Then; The ack/nack signal of the ack/nack signal of the downlink data that the map unit 214 at terminal 200 will be assigned with CCE#1～#k of using unit frequency band 0 shown in Figure 9 respectively and downlink data that CCE#1～#k of using unit frequency band 1 shown in Figure 9 respectively has been assigned with is mapped to the PUCCH zone related with each descending unit frequency band.
Here, calculate the PUCCH zone (ACK/NACK resource) of in the ack/nack signal that sends downlink data, using, the data that said downlink data has been assigned with for the CCE that uses each descending unit frequency band according to the formula (2) of execution mode 1.But, replace the formula (1) of execution mode 1 and ask according to following formula (3) that spendable CCE counts N in the descending unit frequency band of the frequency band i of unit in a certain subframe CCE(i).
N CCE(i)＝(L com*N RE_toal-N RS-N PCFICH-N PHICH)/N RE_CCE …(3)
Wherein, L ComBe illustrated in CFI information (for example, L public in a plurality of descending units frequency band Com=1～3).That is to say that formula (3) is that the L (i) with formula (1) is replaced into L ComThe resulting formula in (public CFI information) back.
For example, have following situation, that is, in a plurality of descending unit frequency band ( unit frequency band 0 and 2 among Fig. 9) that terminal 200 has been set, mistake is sent out in the reception that the PCFICH signal of a certain descending unit frequency band takes place.Here, as long as the bandwidth of each descending unit frequency band is identical, then the maximum number (the CCE number that each descending unit frequency band can use) of the CCE that goes out based on the CFI information calculations of each descending unit frequency band is also identical.Therefore, in each up unit frequency band (unit frequency band 0 among Fig. 9), (in Fig. 9, k ACK/NACK resource) is identical for the size in the PUCCH zone corresponding with each descending unit frequency band.
Therefore; Through base station 100 for the public CFI information of each descending unit band setting; Even thereby terminal 200 is under the situation of the reception mistake of the PCFICH signal that a certain descending unit frequency band has taken place; If the PCFICH signal that the descending unit frequency band arbitrary descending unit frequency band in addition of reception mistake has taken place normally can be decoded, then can confirm the PCFICH signal of all descending unit frequency bands.That is to say that the CFI information of arbitrary descending unit frequency band also can be used in terminal 200 when setting the PUCCH zone corresponding with each descending unit frequency band.In addition, successfully received in the descending unit frequency band of PDCCH signal at terminal 200, CFI information is normally received.That is to say that terminal 200 can be confirmed and is set to the corresponding PUCCH zone of the descending unit at this terminal under the situation of the PDCCH signal that has successfully received arbitrary descending unit frequency band.
Therefore; Even under the situation of the reception mistake of the PCFICH signal that a certain descending unit frequency band has taken place; Terminal 200 also can prevent to send the ack/nack signal to the PDSCH signal of a certain descending unit frequency band with the PUCCH of mistake zone, and in base station 100, can prevent with the ACK/NACK of other-end and conflict.
In addition, even under the mutual condition of different of bandwidth of each descending unit frequency band, base station 100 will be represented that the information of the bandwidth of each descending unit frequency band is notified to each terminal and get final product.In addition, base station 100 is through for constituent parts bandwidth assignment and the bandwidth CCE number of proportional number roughly, thereby between the different unit frequency band of bandwidth, also sets public CFI.Thus, the PUCCH zone corresponding with other descending unit frequency band can be confirmed based on the CFI information of the descending unit frequency band that can normally receive the PDCCH signal and the information that is used to represent the bandwidth of each descending unit frequency band in each terminal.Therefore, even under the mutually different situation of bandwidth of each descending unit frequency band, terminal 200 also can prevent to send the ack/nack signal to the PDSCH signal of a certain descending unit frequency band with the PUCCH zone of mistake.
In addition; For example; In a plurality of descending unit frequency band that terminal 200 has been set, a certain descending unit frequency band is under the situation among the DRX (the discontinuous reception of Discontinuous Reception); In order to set the PUCCH zone in the up unit frequency band related, the CFI information (PCFICH signal) that terminal 200 needs to receive the descending unit frequency band among the DRX with this descending unit frequency band.In addition, in receiving the limited terminal of bandwidth, receive in the time of can't be with the CFI information of same of the CFI information of the descending unit frequency band among the DRX and other descending unit frequency band.But, through by base station 100 for the public CFI information of each descending unit band setting, thereby the CFI information of the descending unit frequency band among the DRX can be confirmed based on the CFI information of the descending unit frequency band beyond the descending unit frequency band among the DRX in terminal 200.
Therefore, even under the situation of the descending unit frequency band in having DRX, terminal 200 also need not receive CFI information through the descending unit frequency band among the DRX and can set the PUCCH zone corresponding with each descending unit frequency band.That is to say that terminal 200 need not to stop DRX in the descending unit frequency band in DRX and receives CFI information, so can prevent to reduce effect decline based on the power of DRX.In addition; For example; Even receive the limited terminal 200 of bandwidth under the situation of the CFI information of CFI information that can't receive the descending unit frequency band among the DRX simultaneously and other descending unit frequency band; Also can confirm the CFI information of the descending unit frequency band among the DRX based on other the CFI information of descending unit frequency band.
Like this; According to this execution mode; Through using public CFI information in a plurality of descending units frequency band; Even thereby can't receive at the terminal under the situation of CFI information of certain descending unit frequency band; Also same with execution mode 1; Can not increase signaling, and reduce the PUCCH zone (ACK/NACK number of resources) in the up unit frequency band.
In addition, in this execution mode, the base station is between a plurality of descending units frequency band, and the downlink data of setting public CFI information and will mailing to a plurality of terminals distributes.Therefore, through the equalization effect, data allocations approximate equality almost between a plurality of descending units frequency band.Therefore, even public CFI information is set in the base station between a plurality of descending units frequency band, the deterioration of throughput takes place hardly also.
(execution mode 4)
In the PDCCH that is configured descending unit frequency band to each; Except the resource allocation information (RB assignment information) that mails to each terminal, also comprise: MCS (Modulation and Coding Scheme: modulation and coded system) information, HARQ (Hybrid Automatic Retransmission reQuest: mix request repetition automatically) information and being used to is controlled PUCCH transmitted power bit (PUCCH TPC (the Transmission Power Control: transmission power control) bit) etc. of the transmitted power of PUCCH.Here; Under the situation of sending from a up unit frequency band to a plurality of ack/nack signals of the downlink data that sent respectively with a plurality of descending units frequency band; Even without with PUCCH transmission power control bit from a plurality of descending units frequency bands notice terminal, and only get final product from notifying with the up unit related descending unit frequency band of frequency band.
On the contrary; If then there is following situation in the frequency band notice PUCCH of a plurality of descending unit transmission power control bit from being set, promptly; The terminal side by side receives a plurality of PUCCH transmission power control bits with a plurality of descending units frequency band, can't suitably control the transmission power control of PUCCH thus.Here, the relative value of PUCCH transmission power control bit through the transmitted power when last time sending (for example ,-1dB, 0dB ,+1dB ,+2dB) expression.
Therefore, for example, the PUCCH transmission power control bit of two descending unit frequency bands representes respectively-situation of 1dB under, PUCCH is sent with-2dB in the terminal.On the other hand, represent at the PUCCH transmission power control bit of two descending unit frequency bands-situation of 1dB under, when the reception mistake of a PUCCH transmission power control bit had taken place, PUCCH was sent with the transmitted power of-1dB in the terminal.Like this, if, then have the situation that suitably to carry out the transmission power control of the PUCCH in the terminal from the frequency band notice PUCCH of a plurality of descending units transmission power control bit.
Therefore, in this execution mode, the base station is for the terminal that has been set a plurality of descending units frequency band, uses the field of PUCCH transmission power control bit of the PDCCH of a certain descending unit frequency band, notifies the CFI information of other descending unit frequency band.Particularly; The base station will be set to the CFI information distribution of the related descending unit frequency band of the up unit frequency band at terminal on the field of the PUCCH of PDCCH transmission power control bit, said PDCCH be configured in be set in a plurality of descending unit frequency band at terminal, be set to the descending unit frequency band beyond the related descending unit frequency band of the up unit frequency band at terminal.
The control unit 102 (Fig. 1) of the base station 100 of this execution mode to be configured to be set to the field of PUCCH transmission power control bit of the PDCCH on the related descending unit frequency band of the up unit frequency band at terminal of resource allocation object, divide pairing to be set to the PUCCH transmission power control bit of up unit frequency band at this terminal.On the other hand; 102 pairs of control units be configured in to be set to the field of PUCCH transmission power control bit of the PDCCH on the descending unit frequency band beyond the related descending unit frequency band of the up unit frequency band at terminal of resource allocation object, distribute and be set to the CFI information of the related descending unit frequency band of the up unit frequency band at this terminal.
The PDCCH receiving element 209 (Fig. 2) at the terminal 200 of this execution mode will carry out blind decoding from the PDCCH signal of separative element 205 inputs, obtain to mail to the PDCCH signal at this terminal.Here; Whether PDCCH receiving element 209 according to the descending unit frequency band that has been assigned with the PDCCH signal that mails to this terminal be and be set to the related descending unit frequency band of up unit frequency band at this terminal, judgement to the field of the PUCCH transmission power control bit in the PDCCH signal the content of control information.
Particularly; PDCCH receiving element 209 be set in the related descending unit frequency band of the up unit frequency band at this terminal, extract control information on the field that is dispensed on the PUCCH transmission power control bit in the PDCCH signal as PUCCH transmission power control bit.In addition, PDCCH receiving element 209 outputs to radio frequency transmitting element 217 (not shown) with the represented transmission power value of PUCCH transmission power control bit that extracts.
On the other hand; PDCCH receiving element 209 be set in the descending unit frequency band beyond the related descending unit frequency band of the up unit frequency band at this terminal, extract on the field that is dispensed on the PUCCH transmission power control bit in the PDCCH signal the control information conduct be set to the CFI information of the related descending unit frequency band of the up unit frequency band at this terminal.Then, PDCCH receiving element 209 outputs to map unit 214 with the CFI information that extracts.
Map unit 214 is based on from the CFI information of PCFICH receiving element 208 input, from the CFI information of PDCCH receiving element 209 inputs and from CCE number of PDCCH receiving element 209 inputs, will be mapped to from the ack/nack signal of modulating unit 211 inputs to be configured to the PUCCH of up unit frequency band.That is to say that map unit 214 and execution mode 1 or 2 likewise based on the CFI information of each descending unit frequency band, are set being set to the starting position in PUCCH in the up unit frequency band at this terminal, corresponding with each descending unit frequency band zone.But map unit 214 is under the situation of PDCCH receiving element 209 input CFI information, uses this CFI information conduct and is set to the CFI information of the related descending unit frequency band of the up unit frequency band at this terminal.That is to say; Terminal 200 use to be set in a plurality of descending unit frequency band at this terminal, with to be set to the PDCCH of the descending unit frequency band beyond the related descending unit frequency band of the up unit in this terminal frequency band distributed, with the CFI information of the related descending unit frequency band of up unit frequency band, the corresponding PUCCH of setting and a plurality of descending units frequency band difference is regional.
The details of the action at base station 100 and terminal 200 in this execution mode then, is described.Here, as shown in figure 10, the unit frequency band number of illustrative system is two a situation.In addition, unit frequency band 0 and each the descending unit frequency band of unit frequency band 1 and the up unit frequency band of unit frequency band 0 are set for terminal 200 in base station 100.In addition, as shown in figure 10, on the PDCCH that is configured descending unit frequency band, be set RB assignment information, MCS information, HARQ information and PUCCH transmission power control field respectively than the various control informations of top grade to each.
As shown in figure 10; 102 pairs of the control units of base station 100 are configured to the PDCCH on the descending unit frequency band of the unit frequency band 0 related with the up unit frequency band of setting the unit frequency band 0 of giving terminal 200, for example distribute RB assignment information (resource allocation information), MCS information, HARQ information and PUCCH transmission power control bit.
On the other hand; As shown in figure 10; 102 pairs of control units be configured to be set to the PDCCH on the descending unit frequency band beyond the related descending unit frequency band of the up unit frequency band of unit frequency band 0 at terminal 200, unit frequency band 1, the CFI information (CFI0) of for example distributing the descending unit frequency band of RB assignment information, MCS information, HARQ information and unit frequency band 0.That is to say; 102 pairs of control units be set to the field of the PUCCH transmission power control bit on the descending unit frequency band beyond the related descending unit frequency band of the up unit frequency band at terminal 200, distribute be set to the related descending unit frequency band of the up unit frequency band at terminal 200 CFI information and replace PUCCH transmitted power bit.
On the other hand, with execution mode 1 or 2 likewise, as shown in figure 10, the map unit at terminal 200 214 uses CFI to set the corresponding regional starting position of PUCCH of descending unit frequency band with unit frequency band 1.In addition; Same with execution mode 2; Map unit 214 will be set in a plurality of descending unit frequency band at this terminal, be set to the related corresponding PUCCH zone of descending unit frequency band of the up unit frequency band at this terminal; Than the corresponding PUCCH zone of the descending unit frequency band beyond the descending unit frequency band related, be set in the end of up unit frequency band with this up unit frequency band.
Here; Map unit 214 is used from the CFI0 (distributing to the CFI0 of the PCFICH of unit frequency band 0 shown in Figure 10) of PCFICH receiving element 208 inputs or from the CFI0 of PDCCH receiving element 209 inputs (being assigned to the CFI0 of field of PUCCH transmission power control bit of the PDCCH of unit frequency band 1 shown in Figure 10), sets the corresponding regional starting position of PUCCH of descending unit frequency band with unit frequency band 1.
Thus; For example; Even under the situation of the reception mistake of the PCFICH signal (CFI0) of the descending unit frequency band that unit frequency band 0 shown in Figure 10 has taken place; If also can normally decode the PDCCH signal of the descending unit frequency band of unit frequency band 1 in terminal 200, then can confirm the CFI0 of the descending unit frequency band of unit frequency band 0.That is to say that even under the situation of the reception mistake of the PCFICH signal (CFI0) of the descending unit frequency band that unit frequency band 0 has taken place, terminal 200 also can be based on CFI0 and the starting position in the PUCCH of the unit's of setting frequency band 1 zone.
In addition, through other descending unit frequency band (unit frequency band 1 among Figure 10) PDCCH notice be set to the related descending unit frequency band (unit frequency band 0 among Figure 10) of the up unit frequency band at terminal 200 (unit frequency band 0 among Figure 10), be the CFI information (CFI0 among Figure 10) of the descending unit frequency band of the end that is set at up unit frequency band (unit frequency band 0 among Figure 10), PUCCH zone.Thus; Even under the situation that the reception of PCFICH signal that will set the descending unit (unit frequency band 0 among Figure 10) in PUCCH zone to the end of up unit frequency band at terminal 200 has been made a mistake; Through other the PDCCH signal of descending unit frequency band (unit frequency band 1 among Figure 10), also can confirm to make a mistake the CFI information of the descending unit frequency band that receives.Here, owing to PDCCH is carried out error detection occurs, so if PDCCH is CRC=OK, the CFI information of then having sent thus is correct information with high probability through CRC.On the other hand, can't carry out error detection occurs, so reliability is lower than the CFI information in the PDCCH to PCFICH.Therefore, terminal 200 is confirming preferentially to use the CFI information of in PDCCH, notifying on the PUCCH resource.
Therefore; Even under the situation that the reception of the PCFICH signal of the descending unit frequency band that will set the PUCCH zone to the end of up unit frequency band has been made a mistake; Terminal 200 also can prevent to send ack/nack signal with the PUCCH zone of having made a mistake, and in base station 100, can prevent and other-end between ack/nack signal clash.
For example; Be set to the descending unit frequency band at terminal 200 be under two the situation; Terminal 200 is through normally receiving the PDCCH signal (CFI0) of unit frequency band 1 shown in Figure 10, can prevent in the base station conflict of the ack/nack signal of 100 terminal room fully.In addition; Be set to the descending unit frequency band at terminal 200 be under 3 the situation; For example; Under the situation of unit frequency band shown in Figure 10 0 and applying unit frequency band 2 (not shown) the unit frequency band 1; The PDCCH signal (CFI0) of recruiting unit's frequency band 1 is normally passed through at terminal 200; And the PDCCH signal (CFI1) of recruiting unit's frequency band 2 normally can prevent in the base station conflict of the ack/nack signal of 100 terminal room.
Like this; According to this execution mode; Even be set to the related descending unit frequency band of the up unit frequency band at terminal, be in the descending unit frequency band of the end that is set at up unit frequency band, PUCCH zone; Taken place under the situation that the misconnection of PCFICH signal receives, CFI information also can be confirmed through the PDCCH signal that in other descending unit frequency band, normally receives in the terminal.Thus; Obtain the effect same with execution mode 2; And from be set to the related descending unit frequency band of the up unit frequency band at terminal in order will with the corresponding PUCCH zone of a plurality of descending units frequency bands when the end of up unit frequency band is set in order, can reduce the probability in the PUCCH zone of having made a mistake for each descending unit band setting at the terminal.
In addition, according to this execution mode, even be set under the situation to the terminal, be set to one, thereby also can compatibly carry out the transmission power control of PUCCH through the descending unit frequency band of notifying PUCCH transmission power control bit at a plurality of descending units frequency band.
In addition, in this execution mode, the field of the PUCCH transmission power control bit in the PDCCH signal is also used except through the PCFICH signalisation CFI information in the base station, notice CFI information.That is to say, owing to use existing control channel to notify CFI information, so need not the signaling of new control information.
In addition, following situation has been described in this execution mode, that is, the field of the PUCCH transmission power control bit in the PDCCH signal is used in the base station, notifies the CFI information of a descending unit frequency band.But in the present invention, the field of the PUCCH transmission power control bit in the PDCCH signal is used in the base station, can notify the CFI information of a plurality of descending units frequency band, also can notify the portion C FI information of a certain descending unit frequency band.
In addition; In this execution mode; For example the descending unit frequency band at unit frequency band 0 shown in Figure 10 is under the situation among the DRX; PUCCH transmission power control bit also can be distributed to the field of the PUCCH transmission power control bit in the PDCCH signal of the descending unit frequency band of unit frequency band 1 in the base station.Thus, even be among the DRX at the descending unit frequency band of unit frequency band 0, the terminal also can compatibly control for the transmitted power of PUCCH of the up unit frequency band of unit frequency band 0 to configuration.
In addition, in this execution mode, the setting of PUCCH that the end in the up unit frequency band of unit frequency band 0 shown in Figure 10 has been described is as the setting in a routine PUCCH zone.But in the present invention, the PUCCH for the two ends of the up unit frequency band of the PUCCH of the other end of the up unit frequency band of unit frequency band 0 shown in Figure 10 and unit frequency band 1 also can likewise carry out the setting in PUCCH zone with above-mentioned execution mode.
More than, each execution mode of the present invention has been described.
In addition; In the above-described embodiment; The up unit frequency band that sends PUCCH signal (for example, ack/nack signal) at each terminal is also referred to as resident component carrier (Anchor component carrier), reference component carrier wave (reference component carrier) or principal component carrier wave (master component carrier).
In addition, following situation has been described in the above-described embodiment, that is, two descending unit frequency bands are used in the base station, mail to the PDCCH signal at each terminal.But among the present invention, a descending unit frequency band for example also can only be used for a terminal in the base station, sends the PDCCH signal.At this moment, same with above-mentioned execution mode, the terminal is being set in the up unit frequency band at this terminal, uses the corresponding PUCCH of the descending unit frequency band that uses in the transmission with the PDCCH signal regional, the transmission ack/nack signal.Thus, for example, can prevent with the LTE terminal of using same descending unit frequency band between the conflicting of ack/nack signal.In addition, send under the situation of PDCCH signal with a descending unit frequency band each terminal the base station, and employed descending unit frequency band is also referred to as resident component carrier, reference component carrier wave or principal component carrier wave when sending this PDCCH signal.
In addition, following situation has been described in the above-described embodiment, that is, the terminal is used and is configured to the PUCCH of a up unit frequency band, sends ack/nack signal.But the present invention can be applicable to also that the terminal is used and is configured respectively to the PUCCH of a plurality of up units frequency bands situation of sending ack/nack signal.
In addition, frequency band polymerization (Band aggregation) also is called as carrier aggregation (Carrier aggregation) sometimes.In addition, the frequency band polymerization is not limited to connect the situation of continuous frequency band, also can connect discontinuous frequency band.
In addition, in the present invention, also can use C-RNTI (Cell-Radio Network Temporary Identifier, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI) as Termination ID.
In the present invention, it both can be the multiplying each other of (that is, CRC bit and Termination ID) between bit that shielding (scrambling) is handled, and also bit addition each other can be calculated the mod2 (that is, with the remainder of addition result divided by 2 o'clock) of addition result.
In addition, in the above-described embodiment, illustrated the unit frequency band is defined as the frequency band of the bandwidth with maximum 20MHz and is the situation of the base unit of communication band.But, the unit frequency band sometimes also by as give a definition.For example; Descending unit frequency band is defined as according to BCH (the Broadcast Channel from base station broadcast sometimes; Broadcast channel) the downstream bands information in is divided the frequency band of gained; Perhaps according to the frequency band of the dispersion width definition of PDCCH decentralized configuration when the frequency domain; The perhaps frequency band that is sent out at core SCH (synchronization channel, synchronizing channel).In addition; Up unit frequency band be defined as sometimes according to upstream band information from the BCH of base station broadcast divide gained frequency band, or near the center, comprise PUSCH, comprise the base unit of the communication band below the 20MHz of PUCCH (Physical Uplink Control Channel) in two end portions.In addition, the unit frequency band also is recited as component carrier (Component carrier).
In addition, up unit frequency band and descending unit frequency band related also can by through descending unit frequency band from the base station uplink information (ul-EARFCN:E-UTRA Absolute Radio Frequency Channel Number) in the system information (SIB) of terminal notice stipulate.In addition, the uplink information in the SIB is stipulated by 3GPP TS36.331 V8.4.0.
In addition, also can use n1Pucch-AN by 3GPP TS36.331 V8.4.0 regulation as using SIB from the base station to the starting position (resource number) in the PUCCH zone of terminal notice.In up unit frequency band, the PUCCH zone is positioned at the outside (that is, the end) of frequency band, and the value of n1Pucch-AN is more little.In addition, as the starting position in PUCCH zone, can use N with 3GPP TS36.211 V8.5.0 regulation PUCCH (1), also can notify from being equivalent to be offset CQI and send the resource N of usefulness RB (2)The relative position of resulting position.In addition, in 3GPP TS36.211 V8.5.0, the PUCCH resource that use at the terminal is to be called n PUCCH (1)Variable name represent.
In addition; In the present invention; The terminal is for the PUCCH that confirms in the transmission of ack/nack signal, to use zone, needs to be grasped the information relevant with intrasystem descending unit frequency band (for example, descending unit frequency band number, the bandwidth of each descending unit frequency band or number (ID) of each descending unit frequency band etc.).Among the present invention, the information relevant with this descending unit frequency band can be notified with SIB, also can be to each terminal notice.Under the situation to each terminal notice information relevant with descending unit frequency band, the base station also can only be notified and be set in the up unit frequency band at terminal, than using the information of the descending unit frequency band that the PUCCH zone of the corresponding regional more lateral of PUCCH of the descending unit frequency band of (maybe possibly use) is set with this terminal.Thus, the starting position in the PUCCH corresponding with each descending unit frequency band zone can be confirmed in the terminal, and can be suppressed to required Min. with notifying to the terminal information amount from the base station with the descending unit relevant information of frequency band.
In addition, among the present invention, also can limit the number that to set the descending unit frequency band in PUCCH zone to a up unit frequency band.For example, in system, also descending unit frequency band and up unit frequency band can be divided into respectively 2 groups that constitute by two descending unit frequency bands and two up unit frequency bands with four descending unit frequency bands and four up unit frequency bands.Thus, will be defined as two to the number that a up unit frequency band can be set the descending unit frequency band in PUCCH zone.In addition, at this moment, send ack/nack signal to the downlink data that sends by the descending unit frequency band more than three with on the same group two up unit frequency bands not.
In addition, following situation has been described in the above-described embodiment, that is, the terminal is used for the mutually different PUCCH of each descending unit frequency band zone and is sent a plurality of ack/nack signals to the downlink data that sends respectively with a plurality of descending units frequency band.But, also the present invention can be applicable to the situation (ACK/NACK bundling:ACK/NACK binding) of terminal for an ack/nack signal of downlink data transmission that sends respectively with a plurality of descending units frequency band.In addition; Also the present invention can be applicable to following situation; That is, the terminal is sent situation to the ack/nack signal of the downlink data that sends respectively with a plurality of descending units frequency band with a PUCCH zone (ACK/NACK resource) of from a plurality of PUCCH zones (ACK/NACK resource), selecting (the ACK/NACK channel is selected (channel selection) or ACK/NACK multiplexing (multiplexing).
In addition, in the above-described embodiment, illustrated and set the example in PUCCH zone through CCE number based on the decision of CFI information.But; In the present invention, for the bandwidth of each unit frequency band, the relation between CFI and the CCE number is slightly different because of antenna number or PHICH number; But constant, so also can depend on the fixing PUCCH zone of CFI for the bandwidth settings of each unit frequency band.In addition, the bandwidth of unit frequency band also can be different between the unit frequency band.
In addition, in the above-described embodiment, the PUCCH zone that makes the descending unit frequency band related with a certain up unit frequency band is to set from the end of this up unit frequency band.Here, the RB that is used for PUCCH from the two ends of unit frequency band by additional index in order.That is to say,, its RB from the two ends of unit frequency band is disposed in order according to PUCCH resource number order from small to large.Therefore, in the present invention, it is regional also can to set the PUCCH of the descending unit frequency band related with a certain up unit frequency band from the little side of PUCCH resource number.
In addition, the channel with BCH, P-BCH (Primary BCH) or D-BCH (Dynamic BCH) etc. sends broadcast message (SIB).
In addition, in the above-described embodiment, for example understand to constitute situation of the present invention, but the present invention also can realize through software with hardware.
In addition, being used for the LSI that each functional block that the explanation of above-mentioned execution mode uses is used as integrated circuit usually realizes.These functional blocks both can be integrated into a chip individually, also can comprise a part or be integrated into a chip fully.Though be called LSI here,, can be called as IC, system LSI, super large LSI (Super LSI) or especially big LSI (Ultra LSI) according to degree of integration.
In addition, realize that the method for integrated circuit is not limited only to LSI, also can use special circuit or general processor to realize.Also can use can LSI make the back programming FPGA (Field Programmable Gate Array: field programmable gate array), the perhaps connection of the inner circuit unit of restructural LSI and the reconfigurable processor of setting.
Moreover, along with semi-conductive technological progress or the appearance of other technology of derivation thereupon,, can utilize this new technology to carry out the integrated of functional block certainly if can substitute the new technology of the integrated circuit of LSI.Also exist the possibility that is suitable for biotechnology etc.
The disclosed content of specification, accompanying drawing and specification digest that the japanese patent application laid of submitting on March 16th, 2009 is willing among the 2009-063031 and is comprised is all quoted in this application.
Industrial applicibility
The present invention can be applicable to mobile communication system etc.

Claims (9)

1. radio communication terminal device uses a plurality of descending units frequency band to communicate, and comprising:
Receiving element; Each unit frequency band to said a plurality of descending units frequency band obtains the control format indication information, and said control format indication information is illustrated in the code element number that uses in the control channel of the resource allocation information that is assigned with the downlink data that mails to this device;
Setup unit; In the up unit frequency band that this device is set; Said control format indication information based on each unit frequency band of said a plurality of descending units frequency band; To each unit frequency band of said a plurality of descending units frequency band, set and be assigned with resource area the response signal of said downlink data; And
Map unit is mapped to said response signal and the descending unit frequency band corresponding said resource area of in the distribution of said downlink data, having used.
2. radio communication terminal device as claimed in claim 1,
Said setup unit with in said a plurality of descending units frequency band, carried out the related corresponding said resource area of descending unit frequency band with said up unit frequency band; Than having carried out the related descending unit frequency band corresponding said resource area of descending unit frequency band in addition, be set in the end of said up unit frequency band with said up unit frequency band.
3. radio communication terminal device as claimed in claim 2,
Said setup unit from the related descending unit frequency band of said up unit frequency band; Order according to the descending unit frequency band that is predetermined; Said resource area that will be corresponding respectively with said a plurality of descending units frequency bands is set from the starting position through the said resource area broadcasted with the said up unit related descending unit frequency band of frequency band in order.
4. radio communication terminal device as claimed in claim 2,
Said setup unit from the related descending unit frequency band of said up unit frequency band; Order with the near descending unit frequency band of the carrier frequency of the distance descending unit frequency band related with said up unit frequency band; To distinguish corresponding said resource area with said a plurality of descending units frequency band, set in order from the end of said up unit frequency band.
5. radio communication terminal device as claimed in claim 1,
Said setup unit uses public said control format indication information in said a plurality of descending units frequency band, sets and the corresponding respectively said resource area of said a plurality of descending units frequency band.
6. radio communication terminal device as claimed in claim 2,
Said setup unit uses the said control format indication information of the descending unit frequency band related with said up unit frequency band; Set and the corresponding respectively said resource area of said a plurality of descending units frequency band, the said control format indication information of said descending unit frequency band has been assigned to the said control channel of descending unit frequency band in addition the descending unit frequency band related with said up unit frequency band in said a plurality of descending units frequency band.
7. radio communication base station device comprises:
Generation unit; For the radio communication terminal device that uses a plurality of descending units frequency band to communicate; Each unit frequency band to said a plurality of descending units frequency band generates the control format indication information, and said control format indication information is illustrated in the code element number that uses in the control channel of the resource allocation information that is assigned with the downlink data that mails to said radio communication terminal device; And
Receiving element; In the up unit frequency band that said radio communication terminal device is set; Said control format indication information based on each unit frequency band of said a plurality of descending units frequency band; Confirm to be assigned with resource area, and from the said resource area corresponding, extract said response signal with the descending unit frequency band that the distribution of said downlink data, has used to the response signal of said downlink data.
8. resource area establishing method is used to the radio communication terminal device that uses a plurality of descending units frequency band to communicate, and said resource area establishing method comprises:
Each unit frequency band to said a plurality of descending units frequency band obtains the control format indication information, and said control format indication information is illustrated in the code element number that uses in the control channel of the resource allocation information that is assigned with the downlink data that mails to said radio communication terminal device; And
In the up unit frequency band that said radio communication terminal device is set; Said control format indication information based on each unit frequency band of said a plurality of descending units frequency band; To each unit frequency band of said a plurality of descending units frequency band, set and be assigned with resource area the response signal of said downlink data.
9. resource area is confirmed method, comprising:
For the radio communication terminal device that uses a plurality of descending units frequency band to communicate; Each unit frequency band to said a plurality of descending units frequency band generates the control format indication information, and said control format indication information is illustrated in the code element number that uses in the control channel of the resource allocation information that is assigned with the downlink data that mails to said radio communication terminal device; And
In the up unit frequency band that said radio communication terminal device set; Said control format indication information based on each unit frequency band of said a plurality of descending units frequency band; Confirm to be assigned with resource area to the response signal of said downlink data, and from the distribution of said downlink data extract said response signal in the corresponding said resource area of the descending unit frequency band that used.
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